Spring Bike Sale

The Gazelle Arroyo C7 HMB Elite embodies the spirit of the classic Dutch bike with some delightfully modern benefits. A roomy stepthrough frame welcomes a range of riders, while an integrated in-tube battery and mid-mounted motor offers a graceful silhouette, a balanced ride feel, and stealthy power. Fully loaded with functional accessories and boasting a comfort-optimized, relaxed riding position, this bike is ideal for city trips and well beyond. - Battery recharge Time: 3-4 hours - Max Assisted Speed: 20 mph - Range: 40 - 80 miles

The Medeo T10 HMB is the highly versatile and functional electric bike to tackle everything from the rat race to the farmers market and everything in between. The artfully designed sloping frame boasts a stylish down tube that integrates with the head tube to create a striking silhouette that will leave your friends envious. With trusted frame geometry and stable handling, combined with wide tires, a suspension front fork and ergonomic handlebar grips, the Medeo T10 HMB is the electric bike to complement your cosmopolitan life.

The Gazelle Ultimate T10 is a top-of-the-range trekking e-bike, refined down to the last detail. The first-class groupset, including Shimano Deore, Bosch Performance line, and ergonomically-shaped handlebar grips, enables sporty performance to be achieved. The Ultimate T10 HMB is delightfully stable on the road thanks to the battery and motor integration plus the rigidity of the frame. The dynamic design, high level of comfort, and excellent handling make this bike the ideal companion for long recreational trips. - Powerful assistance thanks to a Bosch Performance Line motor with 65 Nm of torque (20 mph) and 500 Wh integrated battery - High comfort level on poor road surfaces thanks to the outstanding integrated 30mm suspension front fork - Active posture combined with powerful performance means that no trip is too far - Design, integration, and comfort: the Ultimate T10 HMB has it all

The Medeo T10+ HMB is the stylish and sporty electric bike with dual-battery capability to extend your ride beyond previous possibilities. The cleverly designed sloping frame with an integrated motor and battery is instantly recognizable and will leave drivers gasping in stunned silence as you effortlessly navigate the roads with assistance up to 28 mph. With confidence-inspiring handling due to the robust aluminum frame, wide tires, and suspension front fork, the Gazelle Medeo T10+ HMB is the smart choice for any adventure near or far.

NOTHING BEATS THE FEELING OF YOUR FIRST PEDAL BIKE. THIS TWO-WHEELER COMES WITH REMOVABLE TRAINING WHEELS AND MAKES IT EASY FOR KIDS TO FALL IN LOVE WITH CYCLING. KEY PERFORMANCE FACTORS Built for kids Short crank length and narrow Q-factor make Animator easy to pedal, and a lightweight aluminum frame allows small children to have more control. Kid-friendly features Short-reach brake levers, lower stand-over height, protective stem pad and removable training wheels make it fun and safe for kids learning to ride a pedal bike. Durable ALUXX aluminum frame material provides long-lasting reliability, backed by a lifetime warranty on the frame.

NOTHING BEATS THE FEELING OF YOUR FIRST PEDAL BIKE. THIS TWO-WHEELER COMES WITH REMOVABLE TRAINING WHEELS AND MAKES IT EASY FOR KIDS TO FALL IN LOVE WITH CYCLING. KEY PERFORMANCE FACTORS Built for kids Short crank length and narrow Q-factor make Animator easy to pedal, and a lightweight aluminum frame allows small children to have more control. Kid-friendly features Short-reach brake levers, lower stand-over height, protective stem pad and removable training wheels make it fun and safe for kids learning to ride a pedal bike. Durable ALUXX aluminum frame material provides long-lasting reliability, backed by a lifetime warranty on the frame.

Bold Moves From the driveway to the bike park, the new STP 20 helps young riders build their skills and make the transition from wobbly laps around the block to fun trails and off-road terrain. With a lightweight aluminum frame, smaller 20-inch wheels, and geometry that's designed specifically for young riders, the new STP can be a first step toward adventures in the dirt. Versatile enough to ride on streets, parks or trails, it offers kids a confident, controlled ride to help them build their skills. The 60mm suspension fork soaks up bumps, and powerful disc brakes help them negotiate steep descents. It also features kid-friendly components such as shorter reach brake levers and a comfortable saddle. Key performance factors: - Dirt or street: Lightweight, strong and durable aluminum frameset is designed to go from street riding to bike parks or trails. - Kid-friendly design: Frame geometry is designed specifically for young riders with 20-inch wheels, a low saddle height, and taller front end for a stable ride quality. - Maximum control: Powerful disc brakes put maximum control in the rider's hands.

Lightweight and trail-ready, this little dirt shredder has a wide range of gears to tackle hills and a durable build that will keep up with their adventures. Built with a lightweight aluminum frame, plenty of stand-over clearance, and easy-to-use gears, this is the rigid version (no front suspension) of the XtC Jr. family. With 20-inch wheels and smooth-rolling tires that can handle the trail, it's a fun and stable way to get started on the trail. Lightweight frame ALUXX-grade aluminum frame provides a lightweight, purpose-built chassis for aspiring young off-road riders. Confidence and control Size-specific wheels give young riders the performance they need for true off-road riding. Kid-friendly features Youth-specific performance components help young riders improve their off-road skills.

Built with a lightweight aluminum frame, plenty of stand-over clearance, and easy-to-use gears, this is the rigid version (no front suspension) of the XtC Jr. family. With 20-inch wheels and smooth-rolling tires that can handle the trail, it's a fun and stable way to get started on the trail. Lightweight frame ALUXX-grade aluminum frame provides a lightweight, purpose-built chassis for aspiring young off-road riders. Confidence and control Size-specific wheels give young riders the performance they need for true off-road riding. Kid-friendly features Youth-specific performance components help young riders improve their off-road skills.

Ride to work, ride for your health, get away from it all with a weekend adventure. Here's a bike that does all of the above. With its comfortable positioning and smooth ride quality, Escape is the way to go. With its lightweight ALUXX aluminum frame, confident handling, and fast-rolling 700c wheels, Escape lets you ride any road or path in comfort and style. It's a great choice for commuting, fitness riding, or just for fun. This versatile all-rounder is designed with a flat handlebar and upright rider position, which gives it a confident, sporty feel that's suitable for city streets or country roads. It also comes with rack and fender mounts so you can add accessories to make it fit your needs. Balanced and efficient Lightweight ALUXX frame, smooth-rolling 700c wheels, and confident upright positioning offer a balanced, efficient ride quality. Versatile and capable A wide range of gears helps you increase your speed and tackle hills with more control. Rugged reliability Puncture-resistant tires and integrated rack mounts keep you rolling on tough city streets and more adventurous rides.

Ride to work, ride for your health, get away from it all with a weekend adventure. Here's a bike that does all of the above. With its comfortable positioning and smooth ride quality, Escape is the way to go. With its lightweight ALUXX aluminum frame, confident handling, and fast-rolling 700c wheels, Escape lets you ride any road or path in comfort and style. It's a great choice for commuting, fitness riding, or just for fun. This versatile all-rounder is designed with a flat handlebar and upright rider position, which gives it a confident, sporty feel that's suitable for city streets or country roads. It also comes with rack and fender mounts so you can add accessories to make it fit your needs. Balanced and efficient Lightweight ALUXX frame, smooth-rolling 700c wheels, and confident upright positioning offer a balanced, efficient ride quality. Versatile and capable A wide range of gears helps you increase your speed and tackle hills with more control. Rugged reliability Puncture-resistant tires and integrated rack mounts keep you rolling on tough city streets and more adventurous rides.

From parkways to paths, paved roads or dirt, this versatile flat-bar bike can help you reach new fitness goals or add some spice to your daily commute. KEY PERFORMANCE FACTORS All-terrain versatility With a mountain bike style flat handlebar, suspension fork and disc brakes, you can ride road or dirt with confidence. Lightweight and durable Frameset constructed with high-quality ALUXX aluminum. Comfort and stability Frame geometry puts the rider in a position that balances efficiency with stability on rough roads, paths or trails. Wheel size: Sizes XX-Small – X-Small: 26-inch Sizes Small – X-Large: 27.5-inch

From parkways to paths and everything in between, this versatile bike can add some spice to your commute or fitness routine. With its flat handlebar, upright positioning, and suspension fork, you’re free to ride different types of terrain with confidence and control. With a rugged personality and a smooth riding style, ATX features the familiar flat handlebar look of a traditional mountain bike. It has a lightweight yet durable ALUXX aluminum frame and a suspension fork with 100mm of smooth travel to soak up bumps. The wheel diameter varies based on bike size, with 26-inch wheels on smaller frames and 27.5 on larger ones. This tailors the bike’s handling to a rider’s height. Powerful brakes deliver confident handling in all types of weather, and integrated mounts make it easy to add racks or fenders to suit your riding adventures. All-terrain versatility With a mountain bike-style flat handlebar and suspension fork, you can ride road or dirt with confidence. Lightweight and durable Frameset constructed with high-quality ALUXX aluminum. Comfort and stability Frame geometry puts the rider in a position that balances efficiency with stability on rough roads, paths, or trails.

Ride to work, ride for your health, get away from it all with a weekend adventure. Here’s a bike that does all of the above. With its comfortable positioning and smooth ride quality, Escape is the way to go. With its lightweight ALUXX aluminum frame, confident handling and fast-rolling 700c wheels, Escape lets you ride any road or path in comfort and style. It’s a great choice for commuting, fitness riding, or just for fun. This versatile all-rounder is designed with a flat handlebar and upright rider position, which gives it a confident, sporty feel that's suitable for city streets or country roads. It also comes with rack and fender mounts so you can add accessories to make it fit your needs. KEY PERFORMANCE FACTORS Balanced and efficient Lightweight ALUXX frame, smooth-rolling 700c wheels, and confident upright positioning offer a balanced, efficient ride quality. Versatile and capable A wide range of gears helps you increase your speed and tackle hills with more control. Rugged reliability Puncture-resistant tires and integrated rack mounts keep you rolling on tough city streets and more adventurous rides.

From the driveway to the bike park, the new STP 20 helps young riders build their skills and make the transition from wobbly laps around the block to fun trails and off-road terrain. With a lightweight aluminum frame, smooth front suspension, smaller 20-inch wheels, and geometry that's designed specifically for young riders, the new STP can be a first step toward playful adventures in the dirt. Versatile enough to ride on streets, parks, or trails, it offers kids a confident, controlled ride to help them build their skills. The 80mm suspension fork soaks up bumps, and powerful disc brakes help them negotiate steep descents. It also features kid-friendly components, including shorter reach brake levers and a comfortable saddle. Versatility For Dirt or street - Lightweight, strong, and durable aluminum frameset is designed to go from street riding to bike parks or trails. Kid-friendly design - Frame geometry is designed specifically for young riders with 20-inch wheels, a low saddle height, and a taller front end for a stable ride quality. Maximum control - Powerful disc brakes and a plush suspension fork with a lockout option puts maximum control in the rider's hands.

With a lightweight aluminum frame, smooth front suspension, smaller 20-inch wheels and geometry that's designed specifically for young riders, STP can be a first step toward adventures in the dirt. Versatile enough to ride on streets, parks or trails, it offers kids a confident, controlled ride to help them build their skills. The 60mm suspension fork soaks up bumps, and powerful disc brakes help them negotiate steep descents. It also features kid-friendly components such as shorter reach brake levers and a comfortable saddle.

Smooth-rolling 700c wheels give Cypress a comfortable ride, even when things get a little bumpy. The suspension seatpost soaks up shocks, and the ALUXX aluminum frame provides a comfortable, upright ride. You can take it on roads or bike paths, even some dirt. Just keep pedaling and enjoy the ride.

This versatile flat-bar all-rounder can get your legs spinning and motivate you to be active every day. Commute to work, ride to class, find new adventures in your daily routine. With its lightweight ALUXX aluminum frame, upright positioning, and high-quality parts that give it a smooth, comfortable ride, the Escape Disc is totally versatile and totally fun to ride. It now features a high-quality steel fork and innovative D-Fuse seatpost. Both are great for smoothing out rough roads, absorbing shocks and vibrations, and giving you a smoother, more comfortable ride. The disc brakes deliver powerful braking performance in dry or wet conditions, and the 700c wheels with Giant EasyRide Tubeless tires (on select models) keep you rolling with speed, efficiency, and a reduced risk of flats. As an added bonus, there's clearance for larger tires up to 45mm in width, which makes it easier to ride rougher roads. It comes with integrated mounts, so you can customize your ride with racks or fenders. Whatever road or path you choose, Escape Disc is ready to roll. Balanced and efficient Lightweight ALUXX frame, fast-rolling 700c wheels, and confident upright positioning offer a balanced, efficient ride quality. Versatile and capable Powerful disc brakes and a wide range of gears help you increase your speed and tackle hills with more control. Rugged reliability Puncture-resistant tires feature the Giant EasyRide Tubeless system (on select models). Integrated rack mounts make it easier to carry your daily essentials or load up for weekend adventures.

Follow your own route, wherever it may lead. Roam is built for all types of terrain, so your choices are unlimited. Smooth roads, rough roads, dirt paths, or trails, now you can ride it all with comfort and style. With its confident, flat handlebar positioning and lightweight ALUXX aluminum frame, Roam gives you all the best qualities of a mountain bike and a road bike. Its front suspension and new D-Fuse seatpost absorb road shocks and vibrations, adding comfort and control. It has powerful disc brakes and durable components, so it can take some bumps on rough city roads. And the fast rolling 700c wheels with Giant’s EasyRide Tubeless tires can handle smooth roads or dirt with less risk of a flat tire, making it a great choice for town-to-trail adventures. KEY PERFORMANCE FACTORS Agility and control Updated flat-bar frame geometry puts the rider in a position that balances efficiency with stability, and disc brakes give you added control on rugged roads or dirt. Smooth-riding comfort D-Fuse seatpost and suspension fork absorb road shocks and vibrations, and EasyRide Tubeless tires let you run lower pressure for a smoother ride quality and a reduced risk of flats. Integrated rack mounts Compatible with rear racks, allowing easy cargo capacity for daily trips or longer treks.

Get a feel for the trail with this all-new aluminum hardtail made for aspiring singletrack riders. It features stable, fast-rolling 29-inch or more-playful 27.5-inch wheels so you can push the pace on climbs and let loose on the descents. Built on a new lightweight ALUXX aluminum frame that features classic hardtail design plus the balanced riding characteristics of either larger diameter 29-inch or 27.5-inch wheels, Talon is a great choice for XC or light trail terrain. The frame geometry is specifically designed to adapt to its respective wheel size and either an 80mm or 100mm suspension fork (depending on frame size). It’s a confident ride that’s perfect for ambitious riders who want to take their off-road skills to the next level. Proven alloy performance ALUXX aluminum frameset is hand-built in-house by the world leader in aluminum engineering. Balance and stability Frame geometry is designed to optimize the balance and roll-over capabilities of 29-inch wheels or the liveliness of 27.5-inch wheels (depending on frame size). XC control Suspension fork offers either 80mm or 100mm of smooth travel for added XC control. Wheel size: Sizes X-Small – Medium: 27.5-inch Sizes Small – X-Large: 29-inch

Get a feel for the trail with this all-new aluminum hardtail made for aspiring singletrack riders. It features stable, fast-rolling 29-inch or more-playful 27.5-inch wheels so you can push the pace on climbs and let loose on the descents. Built on a new lightweight ALUXX aluminum frame that features classic hardtail design plus the balanced riding characteristics of either larger diameter 29-inch or 27.5-inch wheels, Talon is a great choice for XC or light trail terrain. The frame geometry is specifically designed to adapt to its respective wheel size and either an 80mm or 100mm suspension fork (depending on frame size). It’s a confident ride that’s perfect for ambitious riders who want to take their off-road skills to the next level. Proven alloy performance ALUXX aluminum frameset is hand-built in-house by the world leader in aluminum engineering. Balance and stability Frame geometry is designed to optimize the balance and roll-over capabilities of 29-inch wheels or the liveliness of 27.5-inch wheels (depending on frame size). XC control Suspension fork offers either 80mm or 100mm of smooth travel for added XC control. Wheel size: Sizes X-Small – Medium: 27.5-inch Sizes Small – X-Large: 29-inch

Get a feel for the trail with this all-new aluminum hardtail made for aspiring singletrack riders. It features stable, fast-rolling 29-inch or more-playful 27.5-inch wheels so you can push the pace on climbs and let loose on the descents. Built on a new lightweight ALUXX aluminum frame that features classic hardtail design plus the balanced riding characteristics of either larger diameter 29-inch or 27.5-inch wheels, Talon is a great choice for XC or light trail terrain. The frame geometry is specifically designed to adapt to its respective wheel size and either an 80mm or 100mm suspension fork (depending on frame size). It’s a confident ride that’s perfect for ambitious riders who want to take their off-road skills to the next level. Proven alloy performance ALUXX aluminum frameset is hand-built in-house by the world leader in aluminum engineering. Balance and stability Frame geometry is designed to optimize the balance and roll-over capabilities of 29-inch wheels or the liveliness of 27.5-inch wheels (depending on frame size). XC control Suspension fork offers either 80mm or 100mm of smooth travel for added XC control. Wheel size: Sizes X-Small – Medium: 27.5-inch Sizes Small – X-Large: 29-inch

Smooth-rolling 700c wheels give Cypress a comfortable ride, even when things get a little bumpy. The suspension seatpost soaks up shocks, and the ALUXX aluminum frame provides a comfortable, upright ride. You can take it on roads or bike paths, even some dirt. Just keep pedaling and enjoy the ride.

This versatile flat-bar all-rounder can get your legs spinning and motivate you to be active every day. Commute to work, ride to class, find new adventures in your daily routine. With its lightweight ALUXX aluminum frame, upright positioning, and high-quality parts that give it a smooth, comfortable ride, the Escape Disc is totally versatile and totally fun to ride. It now features a high-quality alloy fork and innovative D-Fuse seatpost. Both are great for smoothing out rough roads, absorbing shocks and vibrations, and giving you a smoother, more comfortable ride. The disc brakes deliver powerful braking performance in dry or wet conditions, and the 700c wheels with Giant EasyRide Tubeless tires (on select models) keep you rolling with speed, efficiency, and a reduced risk of flats. As an added bonus, there's clearance for larger tires up to 45mm in width, which makes it easier to ride rougher roads. It comes with integrated mounts, so you can customize your ride with racks or fenders. Whatever road or path you choose, Escape Disc is ready to roll. Balanced and efficient Lightweight ALUXX frame, fast-rolling 700c wheels, and confident upright positioning offer a balanced, efficient ride quality. Versatile and capable Powerful disc brakes and a wide range of gears help you increase your speed and tackle hills with more control. Rugged reliability Puncture-resistant tires feature the Giant EasyRide Tubeless system (on select models). Integrated rack mounts make it easier to carry your daily essentials or load up for weekend adventures.

Follow your own route, wherever it may lead. Roam is built for all types of terrain, so your choices are unlimited. Smooth roads, rough roads, dirt paths, or trails, now you can ride it all with comfort and style. With its confident, flat handlebar positioning and lightweight ALUXX aluminum frame, Roam gives you all the best qualities of a mountain bike and a road bike. Its front suspension and new D-Fuse seatpost absorb road shocks and vibrations, adding comfort and control. It has powerful disc brakes and durable components, so it can take some bumps on rough city roads. And the fast rolling 700c wheels with Giant’s EasyRide Tubeless tires can handle smooth roads or dirt with less risk of a flat tire, making it a great choice for town-to-trail adventures. KEY PERFORMANCE FACTORS Agility and control Updated flat-bar frame geometry puts the rider in a position that balances efficiency with stability, and disc brakes give you added control on rugged roads or dirt. Smooth-riding comfort D-Fuse seatpost and suspension fork absorb road shocks and vibrations, and EasyRide Tubeless tires let you run lower pressure for a smoother ride quality and a reduced risk of flats. Integrated rack mounts Compatible with rear racks, allowing easy cargo capacity for daily trips or longer treks.

With its lightweight ALUXX aluminum frame, upright positioning and high-quality parts that give it a smooth, comfortable ride, the Escape Disc is totally versatile and totally fun to ride. It now features a high-quality composite fork and innovative D-Fuse seatpost. Both are great for smoothing out rough roads, absorbing shocks and vibrations, and giving you a smoother, more comfortable ride. The disc brakes deliver powerful braking performance in dry or wet conditions, and the 700c wheels with Giant EasyRide Tubeless tires (on select models) keep you rolling with speed, efficiency and a reduced risk of flats. As an added bonus, there’s clearance for larger tires up to 45mm in width, which makes it easier to ride rougher roads. It comes with integrated mounts, so you can customize your ride with racks or fenders. Whatever road or path you choose, Escape Disc is ready to roll. KEY PERFORMANCE FACTORS Balanced and efficient Lightweight ALUXX frame, fast-rolling 700c wheels, and confident upright positioning offer a balanced, efficient ride quality. Versatile and capable Powerful disc brakes and a wide range of gears help you increase your speed and tackle hills with more control. Rugged reliability Puncture-resistant tires feature the Giant EasyRide Tubeless system (on select models). Integrated rack mounts make it easier to carry your daily essentials or load up for weekend adventures.

Get a feel for the trail with this all-new aluminum hardtail made for aspiring singletrack riders. It features stable, fast-rolling 29-inch or more-playful 27.5-inch wheels so you can push the pace on climbs and let loose on the descents. Built on a new lightweight ALUXX aluminum frame that features classic hardtail design plus the balanced riding characteristics of either larger diameter 29-inch or 27.5-inch wheels, Talon is a great choice for XC or light trail terrain. The frame geometry is specifically designed to adapt to its respective wheel size and either an 80mm or 100mm suspension fork (depending on frame size). It's a confident ride that's perfect for ambitious riders who want to take their off-road skills to the next level. Proven alloy performance ALUXX aluminum frameset is hand-built in-house by the world leader in aluminum engineering. Balance and stability Frame geometry is designed to optimize the balance and roll-over capabilities of 29-inch wheels or the liveliness of 27.5-inch wheels (depending on frame size). XC control Suspension fork offers either 80mm or 100mm of smooth travel for added XC control. Wheel size: Sizes X-Small – Medium: 27.5-inch Sizes Small – X-Large: 29-inch

Follow your own route, wherever it may lead. Roam is built for all types of terrain, so your choices are unlimited. Smooth roads, rough roads, dirt paths or trails, now you can ride it all with comfort and style. With its confident, flat handlebar positioning and lightweight ALUXX aluminum frame, Roam gives you all the best qualities of a mountain bike and a road bike. Its front suspension and new D-Fuse seatpost absorb road shocks and vibrations, adding comfort and control. It has powerful disc brakes and durable components, so it can take some bumps on rough city roads. And the fast rolling 700c wheels with Giant’s CrossCut tires can handle smooth roads or dirt with less risk of a flat tire, making it a great choice for town-to-trail adventures. KEY PERFORMANCE FACTORS Agility and control Updated flat-bar frame geometry puts the rider in a position that balances efficiency with stability, and disc brakes give you added control on rugged roads or dirt. Smooth-riding comfort D-Fuse seatpost and suspension fork absorb road shocks and vibrations, and EasyRide Tubeless tires let you run lower pressure for a smoother ride quality and a reduced risk of flats. Integrated rack mounts Compatible with rear racks, allowing easy cargo capacity for daily trips or longer treks.

With its confident, flat handlebar positioning and lightweight ALUXX aluminum frame, Roam Disc gives you all the best qualities of a mountain bike and a road bike. Its front suspension and new D-Fuse seatpost absorb road shocks and vibrations, adding comfort and control. It has powerful disc brakes and durable components, so it can take some bumps on rough city roads. And the fast-rolling 700c wheels can handle smooth roads or dirt with less risk of a flat tire, making it a great choice for town-to-trail adventures.

Crank up steep climbs with smooth-rolling efficiency. Swoop down singletrack descents with stability and speed. This aluminum hardtail 29er features progressive trail geometry, a plush suspension fork, and dropper seatpost for the confidence you need to up your singletrack game. Built on an ALUXX SL aluminum frame, the Fathom 29 features updated geometry that produces a stable ride quality for challenging XC trails. The frame is optimized for a 130mm suspension fork for smooth control on the descents. An updated Giant WheelSystem comes with tubeless tires already set up, making it easy to experience added efficiency and control, plus a reduced risk of flats on technical terrain. Trail Tuned Design Balanced geometry with a 75-degree seat tube angle puts the rider in a powerful pedaling position on the climbs, while a slacker 66-degree head angle boosts confidence and control on technical descents. Responsive Handling Lightweight ALUXX SL aluminum hardtail frame offers agile acceleration and maneuverability to help riders climb, corner, and hammer the flats with efficiency and speed. Smooth Control Giant Crest 34 suspension fork with 130mm of travel absorbs roots, rocks, and ruts. Grippy, high-volume tires boost traction on rugged terrain. And a dropper seatpost with handlebar remote lets you adjust saddle height on the fly for confident positioning on changing terrain.