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Undergarments

Castelli Active Cooling Sleeveless
$79.99
COOLING TECHNOLOGY By using hydrophilic and hydrophobic yarns, this base layer holds a bit of moisture next to your body while allowing free airflow through the fabric, thanks to the special open knit. You get evaporative cooling directly on your skin. We recommend using this with our coolest jerseys, like the Climber's or Superleggera, though it will work under any breathable jersey. - Base layer to cool you on hot days - Polartec Delta fabric features regulated drying so that the evaporative effect cools your core - Sleeveless design with minimalist construction - Sublimated overprint - 25°-35°C / 68°-95°F - Weight: 84g
Castelli Flanders Warm LS
$79.99
Insulate yourself against the harshest winter rides with Castelli's Flanders Warm LS. Made to withstand your coldest days on the bike, the Flanders features SottoZero Fleece fabric for exceptional warmth. Flatlock stitching ensures a smooth feel against your skin, and mesh armpit inserts allow venting right where you need it. A flat hem tucks easily into tights so you avoid bunching, while the high collar keeps your neck warm and drafts at bay.
Castelli Prosecco R LS
$79.99
- Prosecco mid-weight fabric to keep you dry with a bit of insulation as well - Cut to fit under any Castelli jersey - Flat seams
Castelli Prosecco R SS
$74.99
The Prosecco base layers are our mid-weight option and are made to wick moisture away from your body while adding a moderate amount of insulation. This all-around base layer can be used under a short-sleeve jersey to extend the comfort range to those first cool fall days, or even under a full jacket for your intense cold-weather training sessions. - Prosecco mid-weight fabric to keep you dry with a bit of insulation as well - Cut to fit under any Castelli jersey - Flat seams
Castelli Pro Mesh Short Sleeve
$69.99
PRO-LEVEL BASE The pro cyclists we work with know the importance of the right base layer for the conditions. The Pro Mesh is made for the widest range of conditions and is designed to keep you dry in cool to mild temperatures. We’ll even put it under a Flanders Warm base layer in the coldest conditions. We’ve given it a graphic print so you can show off that you have something special when you open your jersey zip. - 3D mesh fabric for excellent moisture management - Sublimated print graphic - Waist hem stays flat under shorts - 15°-28° / 59°-80°F - Weight: 55g
Castelli Core Seamless Base Layer
$59.99
MIRACLE LAYER We've never been happy with the traditional nylon/Lycra construction of most seamless base layers, which tend to hold a lot of moisture. We engineered this Core Seamless with a mixture of polyester and polypropylene that moves the moisture away from your body with absolutely minimal moisture uptake. The fabric is soft next to your skin and provides great temperature regulation in mild conditions. It's not for hot temperatures but it does work as a first layer even into cooler temperatures, while the seamless construction keeps it extremely comfortable next to your skin. - Seamless lightweight drying layer - Ideal for cool to mild conditions when keeping yourself dry is the priority - Unique mix of polyester and polypropylene provides maximum moisture management with significantly lighter weight - Seamless construction gives exceptionally stretchy fit - 15°-25°C / 59°-77°F - Weight: 45g
Castelli Pro Issue 2 W Short Sleeve
$59.99
- 3D mesh fabric for excellent moisture management - 15°-25°C / 59°-77°F - Weight: 40g
Castelli Pro Mesh Sleeveless
$59.99
PRO-LEVEL BASE The pro cyclists we work with know the importance of the right base layer for the conditions. The Pro Mesh is made for the widest range of conditions and is designed to keep you dry in cool to mild temperatures. We’ll even put it under a Flanders Warm base layer in the coldest conditions. We’ve given it a graphic print so you can show off that you have something special when you open your jersey zip. - 3D mesh fabric for excellent moisture management - Sublimated print graphic - Waist hem stays flat under shorts - 15°-28°C/48°-80°F - Weight: 55g
Castelli Pro Mesh W Sleeveless
$59.99
Pro Duty This is the same fabric we use in the base layers for our pro riders, and you’ll appreciate the extreme comfort and wide temperature range even if you just buy the piece because you like the color. - 3D mesh fabric for excellent moisture management - Sublimated print graphic - Waist hem stays flat under shorts - 15°-27°C / 59°-80°F - Weight: 41g
Castelli Prosecco R W SS
$59.99
The Prosecco base layers are our mid-weight option and are made to wick moisture away from your body while adding a moderate amount of insulation. This all-around base layer can be used under a short-sleeve jersey to extend the comfort range to those first cool fall days, or even under a full jacket for your intense cold-weather training sessions. - Prosecco mid-weight fabric to keep you dry with a bit of insulation as well - Cut to fit under any Castelli jersey - Flat seams
Castelli Rosso Corsa Bra
$59.99
We wanted to make a bra for the unique demands of cycling. Compared to other sports there's less impact but requires a higher level of moisture management. We've engineered in just the right amount of support—you'd certainly never go running in this bra but it's just right for cycling. - Superlight stretch fabric perfect for cycling - Mesh inserts for extreme breathability keep you cool and dry - Back hook-and-eye closure with 3-position regulation for easy on and off - Molded cups with full coverage - Medium support thanks to contoured seams and underbust elastic for enhanced fit and support
Castelli Core Mesh 3 SS
$54.99
This is our base layer for the warmest conditions. The mesh is open to create a space on the skin for sweat to evaporate. The 10% elastane content makes it very stretchy and helps in the moisture retention so that you're always getting evaporative cooling. - Magic Mesh 90% polyester, 10% Elastane wicking fabric - Minimalist lightweight construction - Reduced seams for maximum comfort
Castelli Core Mesh 3 Sleeveless
$49.99
This is our base layer for the warmest conditions. The mesh is open to create a space on the skin for sweat to evaporate. The 10% elastane content makes it very stretchy and helps in the moisture retention so that you're always getting evaporative cooling. - Magic Mesh 90% polyester, 10% Elastane wicking fabric - Minimalist lightweight construction - Reduced seams for maximum comfort
Castelli Pro Issue 2 W Sleeveless
$49.99
- 3D mesh fabric for excellent moisture management - 15°-25°C/59°-77°F - Weight: 40g
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