On the hottest days, we need every trick in the book to stay comfortable on the bike: frozen bidons, pre-soaked cap, frequent shade stops. Castelli's Active Cooling Baselayer adds to our arsenal of hot-weather techniques with innovative fabric to keep our temperature well-regulated through tough...

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The Castelli Bandito Wool Sleeveless Baselayer keeps our core warm during those chilly but not-too-cold rides where a long-sleeve is too much.

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Castelli believes so much in the power of the fabric it uses to craft the Core Mesh 3 Sleeveless Baselayer that it deviated from its usual performance-related fabric monikers and named it Magic Mesh. Before you get skeptical about the fabric's otherworldly name, consider that the brand omitted...

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When we're training and racing during the spring months, the last thing we want is sweat held in fabric, keeping us too cold for the descent back down the canyon. Castelli's Core Seamless Baselayer uses a mix of polyester and polyproylene which wick moisture away from the skin better than...

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Hot days leave us wanting a jersey that adapts for the heat by providing a sleeveless fit and outstanding breathability, and that's just the start of what the Entrata VI Sleeveless Jersey has to offer. It's designed with Castelli's pro racing technology to make for an all-around performance...

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Castelli's Miracolo Wool Sleeveless Baselayer keeps our core warm on high-intensity, cool weather rides with its mesh construction made of merino wool, nylon, and elastane. Its minimalist construction is bulk-free, allowing for a comfortable fit beneath our skin-tight jersey.

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The Castelli Pro Issue 2 Short-Sleeve Baselayer keeps us dry and comfortable as we ride through warm to hot temperatures. Its 3D mesh polyester fabric wicks away moisture to keep us cool, while reduced seams at the shoulders provide a comfortable fit. Designed to fit perfectly underneath an aero...

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The Castelli Pro Mesh 2. 0 Sleeveless Baselayer provides the moisture management we need to keep us dry during cool to mild weather rides. The sleeveless construction and waist hem stay perfectly in place as we ride, making it the perfect base layer for spring riding.

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For an ultralight base that won't hold onto sweat, we kit up with the Castelli Pro Mesh 4 Sleeveless Baselayer. The full mesh construction wicks away moisture and dries off quick to ensure we don't get sweat-logged or overheated on climbs, while the low-profile hem lays flat under our tights for...

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Pro-level comfort and moisture management with colorful graphics.

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