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Undergarments

Control your climate with Bontrager baselayers.

Available in multiple fabric weights, each with its own unique construction, and each designed for moisture-wicking, quick-drying, and 4-way stretch mobility, Bontrager baselayers provide the specific thermal performance you need to stay comfortable, no matter how intense your ride or varied the conditions.

Bontrager Sport Cycleliner
$27.99 $39.99 30% Savings
Bontrager's Sport Cycleliner turns any shorts into cycling shorts. These fitted liners use highly breathable microfiber with a multi-panel design for serious comfort. Speaking of comfort, you also get Bontrager's inForm chamois padding for support and protection, leg grippers to keep these liners in place and a chafe-free waistband.
Craft Cool Mesh Super Light SL Base Layer
$49.99
Craft's Superlight Mesh top features big-hole design for superior ventilation and cooling. • Multi-channel, hollow, polyester filament fabric • Fibers channel moisture away from the body • Antimicrobial treatment to prevent fabric odor • Ergonomic fit
Pearl Izumi Men's Cargo Liner Shorts
$70.00
Engineered to deliver friction free pedaling, performance, and phenomenal breathability, the Pearl Izumi Men's Cargo Liner Shorts are a must have for serious trail riders. Smooth fabric on the front of the thighs allows the liner to slide easily beneath your shell shorts and the Transfer Mesh main body delivers unbelievable breathability. Thigh pockets near the leg openings can conveniently stash your food, ID, money, or tools. And they are easy to access by flipping up the bottom of your shell short. The superior ELITE Escape 1:1 Chamois takes your saddle comfort to a whole new level. Features: - New Transfer Mesh body fabric provides an amazing next-to-skin feel - Smooth fabric across the front of the legs slides easily under shell shorts and ensures a friction-free pedaling experience - Optimized with the superior ELITE Escape 1:1 Chamois - Two thigh pockets for carrying ride essentials - 10” inseam
Gore Wear Base Layer Singlet
$39.99
Gore's Base Layers are made of a light moisture-transferring fabric with non-chafing flatlock seams and an anatomic cut for excellent comfort and freedom of movement.
Bontrager B1 Short Sleeve Baselayer
$39.99
Even warmer rides can benefit from the right baselayer. Bontrager's lightest weight baselayer fabric, B1, is a comfortable first layer of Profila Cool fabric enhanced with 37.5 technology that regulates the body’s relative humidity to maintain ideal core temperature, allowing greater on-bike performance. Comfortably fits under every jersey you own. Key features: - Profila Cool fabric powered by 37.5 active particle technology - Conditions-appropriate, tuckable length - Drop tail for a precise on-bike fit - Fitted cut provides streamlined body fit for enhanced performance
Bontrager B1 Sleeveless Baselayer
$34.99
Even warmer rides can benefit from the right baselayer. Bontrager's lightest weight baselayer fabric, B1, is a comfortable first layer of Profila Cool fabric enhanced with 37.5 technology that regulates the body’s relative humidity to maintain ideal core temperature, allowing greater on-bike performance. Comfortably fits under every jersey you own. Key features: - Profila Cool fabric powered by 37.5 active particle technology - Conditions-appropriate, tuckable length - Drop tail for a precise on-bike fit - Fitted cut provides streamlined body fit for enhanced performance
Club Ride Jewel - Women's
$34.95
A little comfort goes a long way with Club Ride's Jewel sport briefs. A minimalist Quicky chamois provides padding for short rides and commutes. And, its soft waistband keeps the breathable, performance fabric in place.
Bontrager Troslo inForm Cycling Liner Short
$69.99
The Troslo inForm short is unlike any cycling liner short you’ve seen before. Dual hip pockets easily hold a variety of essentials, while comfortable mesh ventilation and supportive compression materials fight fatigue to make this the ultimate liner to go under your shorts and prevent chaffing. Key features - Troslo inForm BioDynamic Chamois - comfortable, dimension-optimized cycling pad - Two pockets on legs for nutrition wrappers or lip balm - Profila Power main materials with strategically placed Profila Cool inserts - Clean cut compression leg gripper - Flexible fit waistband for superior comfort - 9.5" (24cm) inseam - Fitted cut provides streamlined body fit for enhanced performance
Cannondale Women's Liner Shorts
$30.00
Cannondale's Liner Shorts are perfect for turning standard shorts into cycling shorts. They're made of a comfortable and breathable poly/spandex blend and they boast Cannondale's seamless Comfort chamois for ample padding and excellent comfort on the bike.
Bontrager Troslo inForm Cycling Liner Bib Short
$79.99
The Troslo inForm bib short is unlike any cycling liner you’ve seen before. Dual hip pockets hold a variety of essentials, while comfortable mesh ventilation and supportive compression materials fight fatigue to make this the ultimate liner to go under your shorts and prevent chaffing. Key features - Troslo inForm BioDynamic Chamois - comfortable, dimension-optimized cycling pad - Three back pockets on bib and two pockets on legs for nutrition wrappers or lip balm - Profila Power main materials with strategically placed Profila Cool inserts - Clean cut compression leg gripper - Bib straps for ultimate non-restrictive comfort - 9.5" (24cm) inseam - Fitted cut provides streamlined body fit for enhanced performance
Endura Transrib Shortsleeve Baselayer
$44.99
CoolMax ribbed knit makes Endura's Transrib Shortsleeve Baselayer an insulating layer in the winter, while its superior moisture management keeps you cool come summertime. Regardless of when you ride, the antibacterial finish on this baselayer will keep you feeling fresh. And, this snug, high-stretch top fits seamlessly beneath any jersey.
Endura Clickfast 8-Panel Coolmax Liner Shorts
$54.99
Crafted from Coolmax for exceptional breathability, Endura's Clickfast 8-Panel Coolmax Liner Shorts offer supreme riding comfort. Mesh panels create optimal ventilation while flatlock seams increase durability and a jacquard waistband offers a soft touch. Plus, silicone hem grippers keep this liner in place. They're designed to work in tandem with Endura's Clickfast-ready bottoms (sold separately), but they feel great in any pair of shorts you wear while riding. And, they're available with a 400-Series gel pad for extra support.
Pearl Izumi Men's SELECT Liner Shorts
$50.00
Pearl Izumi has outfitted this liner with their high quality SELECT Escape 1:1 Chamois, so you will no longer have to decide between the comfort of traditional bike shorts or the added breathability of a liner. The smooth-face mesh fabric used throughout the shorts body helps the liner move smoothly under your shell layer for unrestricted pedaling. - SELECT Escape 1:1 Chamois provides optimal moisture transfer and odor resistance - Updated pattern contours to the body for optimal fit when riding - Transfer Mesh fabric on main body prevents overheating while wearing shell shorts - Transfer fabric on lower legs is designed to allow shell shorts to move without friction during pedaling - Wide waistband provides comfort without extra pressure Main: 80% polyester, 20% elastane; Legs: 88% nylon, 12% LYCRA; Garment Weight (Size M): 120g
POC Hip VPD 2.0 Shorts
$119.99
POC's Hip VPD 2.0 Shorts protect your tailbone and hips with Visco-Elastic Polymer Dough that is flexible when moving, then turns rigid upon impact. Wear these liners under your DH shorts and you get muscle support, a chamois and peace of mind. They fit well thanks to stretchy fabric and breathe well due to the ventilated mesh.
Craft Active Crew Neck LS Base Layer
$59.99
The Active Crew Neck Base Layer by Craft keeps your body dry and comfortable during rides in cool to cold conditions. Its Pro Zero fabric provides a seamless, high stretch, nonrestrictive fit. Plus, the extended back is perfect for protecting your backside when you're pedaling. • Circular knitting process allows for a seamless torso and a high stretch, nonrestrictive fit • Internal air channels allow body heat to escape • Textured filament yarns
Craft Active Windstopper Gunde Boxer Short
$40.00
Craft's Active Windstopper Boxer Shorts are the ultimate base layer for cold and windy conditions. They feature a 4-way stretch fabric panel to keep you warm and dry. - Gore Wind Stop Piuma Panel - Pro Zero Fabric - Chafe-free waistband - Flatlock stitching - Excellent moisture transfer - Machine washable and dryable
Craft Bike Bra - Women's
$49.99
With its cycling-specific cut for freedom of movement, lightweight fabric for ventilation, and mesh edging, Craft's Bike Bra provides the comfort you need on all your rides. - Body-mapped - Super light fabric - Ergonomic mesh edging - Cycling-specific shoulder straps - Folded lining for optimal moisture transfer
Craft Active Long Underpants
$59.99
Craft's Active Long Underpants are a soft, ventilating base layer with great moisture transport. - Keeps legs dry and comfortable during exercise in cool to cold conditions - Excellent moisture transport - Flatlock stitched - Soft seams are on outside of garment - Perfect fit
Pearl Izumi Women's Transfer Wool Short Sleeve Base Layer
$80.00
Pearl's Transfer Wool Short Sleeve Base Layer is the best piece to have next to your skin as part of a layering system for riding in damp or wet conditions. This baselayer combines high quality Merino wool and moisture-wicking polyester in a strategic blend for exceptional performance. Its cycling specific shape, thumb loops if you need to seal in the warmth, and soft merrow seams create a comfortable foundation for cold weather and changing conditions. • P.R.O. Transfer Dry Merino provides optimal moisture transfer, dry time and odor absorption • Cycling specific fit with rotated sleeve construction • All–season versatility • Anatomic ‘close–to–body’ fit
Pearl Izumi Women's Transfer Wool Long Sleeve Cycling Baselayer
$90.00
This is the best piece to have next to your skin as part of a layering system for riding in cool and damp or wet conditions. This baselayer combines high quality Merino wool and moisture-wicking polyester in a strategic blend for exceptional performance. Its cycling specific shape, thumb loops if you need to seal in the warmth, and soft Merrow seams create a comfortable foundation for cold weather and changing conditions. - P.R.O. Transfer Dry Merino provides optimal moisture transfer, dry time and odor absorption - Patent Pending anatomic Speed Sleeve construction for best shoulder fit in the cycling position - Cycling specific, close-to-body, anatomic fit - Four season versatility - Front: 86% Merino wool 14% nylon - Weight: 150 g/m2 - Back: 62% polyester 38% Merino wool - Weight: 130 g/m2 - Imported
Pearl Izumi Men's Transfer Wool Short Sleeve Cycling Baselayer
$80.00
The best piece to have next to your skin as part of a layering system for riding in damp or wet conditions. This baselayer combines high quality Merino wool and moisture-wicking polyester in a strategic blend for exceptional performance. A women’s-specific cycling shape, to-the-elbow half sleeve, and soft merrow seams create a warm and comfortable foundation for cold weather and changing conditions. - P.R.O. Transfer Dry Merino provides optimal moisture transfer, dry time and odor absorption - Cycling specific fit with rotated sleeve construction - All–season versatility - Anatomic ‘close–to–body' fit
Louis Garneau 2002 Sport Innercycling Shorts
$39.99
With Nano-Silver technology, these innershorts offer antibacterial, antiodor and fast-drying properties and help control body temperature. FABRICS: -Drytex® 2002: Thermoregulation DETAILS: -Elastic at waist -Side braids: Allow adjustable positioning with MTB shorts -Inseam: 8"/20.5 cm -Powerband: Compressive cuff that reduces lower leg pressure and provides support without restricting circulation -Permanent NANO-SILVER technology: Antibacterial and antiodor properties INFO +: -AirSport Chamois
Louis Garneau Women's 2002 Sport Inner Cycling Shorts
$39.99
With Nano-Silver Technology, these innershorts offer antibacterial, antiodor and fast-drying properties and help control body temperature. FABRICS: -Drytex® 2002: Thermoregulation DETAILS: -Elastic at waist -Side braids: Allow adjustable positioning with MTB shorts -Inseam: 8"/20.5 cm -Powerband: Compressive cuff that reduces lower leg pressure and provides support without restricting circulation -Permanent NANO-SILVER technology: Antibacterial and antiodor properties INFO +: -AirSport Chamois - Women
Louis Garneau Women's 2002 Cycling Undies
$34.99
Whether on the road, trails, or in spin class, these versatile undies can be worn under your favorite garment for an instant cycling outfit. FABRICS: Drytex® 2002: Thermoregulation DETAILS: -Elastic at waist -Side braids: Allow adjustable positioning with MTB shorts -Flatlock seams: Enhanced comfort -Permanent NANO-SILVER technology: Antibacterial and antiodor properties INFO +: -Slim Flex Chamois - Women
Pearl Izumi Bib Liner Short
$100.00
For riders who want the best fit and all-day comfort, nothing matches the performance of a bib short. With its high-quality ELITE Pursuit 1:1™ Chamois, this bib liner is the perfect complement to your favorite mountain bike short. It’s made with lightweight, comfortable mesh material and has three back pockets to carry food, water or tools if you prefer to ride without a hydration pack. - Strategic seam placement provides optimal chafe-free comfort - Gripperless leg opening - Three back pockets on the bib straps and integrated thigh pockets for storage - ELITE Pursuit 1:1™ Chamois - Underwear style fly - Mesh bib upper provides stability and comfort
Fox Racing Evolution Pro Bib Liners
$149.95
The completely redesigned Attack Pro Trail System is all-mountain apparel at it's finest. The four part system creates the ultimate in trail comfort and performance to help you ride longer, stronger, and better. Premium Italian fabrics wick moisture to keep you cool and dry, and make a super-light silhouette perfect for all day riding. Tweaks like a built-in Fly-Flap for "taking care of business" on the go, and a storage pocket designed for use with Fox's pocket case make these bib liners the perfect addition to your mountain biking arsenal. Design & Function: - Premium Italian Polyester stretch mesh fabric - Reflective media loop - Mesh pockets for storage - Fly flap with internal opening - Built with Evo Chamois
Pearl Izumi Women's Transfer Long Sleeve Baselayer
$65.00
This women's-specific cycling baselayer is designed to keep you warm and comfortable on cool to cold days. Transfer fabric rapidly moves moisture away from your skin to the outer layer, while activated charcoal in the front panel fabric further speeds dry time and moisture transport. Speed Sleeve anatomic construction hugs the contours of your shoulders, providing a second-skin fit when in the bent-over riding position. Wear this baselayer under a long sleeve jersey during cooler months, and then add it to your cold weather layering system during chillier months. - Transfer Dry fabric provides optimal moisture transfer for quick dry performance - Anatomic Speed Sleeve construction for best shoulder fit in the cycling position - Cycling specific, close to body, anatomic fit - Activated Charcoal integrated into the yarns used in front panels to speed dry time even more - Soft Merrow seams for next to body comfort
Pearl Izumi Men's Transfer Long Sleeve Baselayer
$65.00
This cycling-specific summer-weight baselayer is designed to keep you cool and comfortable even on hot days. Transfer fabric facilitates the evaporation process by rapidly moving moisture away from your skin to outer layers, while activated charcoal in the front panel fabric further speeds dry time and cooling. In back, mesh panels maximize ventilation. Speed Sleeve anatomic construction hugs the contours of your shoulders, providing a second-skin fit when in the bent-over riding position. Wear this baselayer under a short sleeve jersey during the heat of summer, and then add it to your cool weather layering system during chillier months. - Transfer Dry fabric provides optimal moisture transfer for quick dry performance - Anatomic Speed Sleeve construction for best shoulder fit in the cycling position - Cycling specific, close to the body - Activated Charcoal integrated into the yarns used in front panels to speed dry time even more - Soft Merrow seams for next to body comfort
Pearl Izumi Women's Cargo Baselayer
$60.00
A full mesh baselayer designed to carry ride essentials under a jersey, with Pearl's patented anatomic Speed Sleeve construction to deliver a cycling-specific fit and support your load comfortably through your shoulders. - Direct-Vent mesh fabric for optimal moisture transfer and cooling - Patented anatomic Speed Sleeve design provides anatomically contoured fit in the cycling position, plus spreads the weight of pocket cargo across your shoulders - Three back pockets allow close-to-body storage without bouncing
Pearl Izumi Men's Cargo Base Layer
$60.00
A full mesh baselayer designed to carry ride essentials under a jersey, with Pearl's patented anatomic Speed Sleeve construction to deliver a cycling-specific fit and support your load comfortably through your shoulders. - Direct-Vent mesh fabric for optimal moisture transfer and cooling - Patented anatomic Speed Sleeve design provides anatomically contoured fit in the cycling position, plus spreads the weight of pocket cargo across your shoulders - Three back pockets allow close-to-body storage without bouncing
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