Eliminate unwanted bulk underneath an aero race jersey with the ASSOS 1/3 Sleeveless Skin Layer P1, a sleeveless baselayer built with a second-skin fit to keep us cool during a hot summer ride. The unique construction features a circular seamless mesh fabric with carbon-infused odor control that...

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The GTO NS DermaSensor Baselayer uses a 3D jacquard warp-knit design to pull moisture away from our skin and dry in a flash while we're flying downhill or making another burly climb.

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Adding a baselayer under an aero jersey on the hottest of days might sound counterintuitive, but when the days reach triple digits, the ASSOS NS Superleger Skin Layer keeps us cooler for longer with its body-mapped open mesh. ASSOS designed this with their push-pull jersey sleeves in mind to...

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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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To avoid creating a large puddle of sweat below our bike during our Zwift meet-ups, we throw on the Castelli Insider Sleeveless Jersey to help keep us cool and collected. Its 3D mesh construction optimizes airflow and wicks away moisture, while HEIQ Fresh Tech odor-control treatment naturally...

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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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