Since our favorite trails begin in arid lowlands with little-to-no shade, eventually transitioning to dense forests thousands of feet higher where the air is much cooler, we're suckers for well-ventilated jerseys with greater coverage. Such departures in environmental conditions are hard to plan...

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The next evolution of our hypercooling, ultrabreathable Summer Skin Layer, re-engineered to be more elastic, more breathable, and 15% lighter.

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The new textile blend creates a more elastic, body-wrapping shape for a better second-skin fit. The textile's more open structure also increases cooling airflow and breathability, and its permanent odor control doesn't diminish after washing. The deep collar shape and sleeve lengths mirror the...

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1/3 Sleeveless P1 Base Layer - Women's

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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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An exceptionally light base layer that manages moisture and controls odor beneath second-skin cold-weather layers or as a standalone top during indoor training.

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Whether you are kitting up for race day or just a training ride, the Race 2. 0 Short-Sleeve Jersey gives you the race fit you are looking for. Every part of this jersey is designed with the race fit in mind, including a low neckline, three seamless back pockets, and warp-knit construction to...

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Castelli's fastest jersey yet features all of the material and design knowledge the brand has honed since its first aero jersey was released in 2006, and it does not disappoint. The Aero Race 6. 0 Full-Zip Jersey is optimized to counteract the drag we as riders cultivate with an aerodynamic fit...

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By studying aerodynamics and with feedback from pro riders, Castelli designed the Aero Race 6. 0 FZ Jersey, finding the perfect fabric and seam placement combo for optimal moisture management and least resistance. The 3D mesh back panel lets building heat easily escape, while the performance...

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Castelli's latest version of its slippery top, the Aero Race 6. 0 Full-Zip Jersey, is the culmination of everything they've learned about material and design distilled into its fastest jersey to date. The jersey is optimized at the real-world speeds we often find ourselves riding (around...

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