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Seamless base layers are great in concept. Designed for stretch, comfort, and fit. However, too often the nylon/lycra fabric feels great when you p...

The Castelli Bandito Wool base layer utilizes the natural warmth of wool, mixed with recycled polyester to improve wicking and wraps it all up in t...

The Castelli Active Cooling Sleeveless baselayer is built for hot days. Constructed from hydrophilic and hydrophobic yarns, holds just a bit of moi...

Designed with feedback from Team Ineos, the Flanders Warm/Neck Warmer base-layer takes Castelli's warmest base-layer fabric, and adds on a built-in...

Designed with feedback from Team Ineos, the Flanders Warm/Neck Warmer base-layer takes Castelli's warmest base-layer fabric, and adds on a built-in...

Designed specifically for winter in Flanders, the Castelli Flanders Warm LS baselayer features high loft fleece on the interior for optimal warmth ...

Castelli CORE MESH 3 SS Short Sleeve Base Layer : BLACK Designed as a lightweight, minimalist base layer for warm summer riding, the Castel...

Designed as a lightweight, minimalist base layer for warm summer riding, the Castelli Core Mesh 3 Sleeveless base layer has got what it takes to ke...

Specifically requested by the pros for those inbetween conditions where mesh is too light, but an insulated baselayer is too heavy. Designed solely...

Designed as a lightweight, minimalist base layer for warm summer riding, the Castelli Core Mesh 3 Sleeveless base layer has got what it takes to ke...

Seamless base layers are great in concept. Designed for stretch, comfort, and fit. However, too often the nylon/lycra fabric feels great when you p...

Designed first and foremost to move moisture away from your skin and keep you dry, the Castelli Prosecco Tech Long Sleeve base layer also offers ju...

Pro cyclists know the importance of the right base layer for the right conditions. Thus, Castelli's optimized the Pro Mesh base layer for the wides...

Pro cyclists know the importance of picking the right base layer for the weather, and thanks to Castelli, QuickStep Alpha Vinyl always has one avai...

"What is that?" was the #1 question lighting up Castelli's socials when Tao Geoghegan Hart wore a prototype of this base layer up and over the Stel...

The Castelli Bandito Wool base layer utilizes the natural warmth of wool, mixed with recycled polyester to improve wicking and wraps it all up in t...

The Castelli Bandito Wool base layer utilizes the natural warmth of wool, mixed with recycled polyester to improve wicking and wraps it all up in t...

Seamless base layers are great in concept. Designed for stretch, comfort, and fit. However, too often the nylon/lycra fabric feels great when you p...

Designed specifically for winter in Flanders, the Castelli Flanders 2 W Warm Long Sleeve baselayer features high loft fleece on the interior for op...