Built for long rides with a scary amount of elevation gain, the Climber's 2. 0 Jersey is the one to wear when things get steep. It's no one-trick pony though, and we've found it works well in hot weather and is an ideal base layer in cooler weather or rain under a vest or jacket thanks to its...

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The Castelli Climber's 2. 0 Limited Edition Jersey is a must-have for the season of hot riding. The Flusso 3D front fabric allows for optimal airflow, while the StradaPro 3D rear fabric construction is designed to block over 90% of UV rays. With these fabrics, a lightweight, aero-efficient,...

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Castelli is synonymous with Italian craftsmanship in our book, and with jersey's like the Climber's 3. 0 Limited Edition, we see just how far the brand has come in the cycling industry. The brand seeks to marry aerodynamics with perfect fit and comfort, and that's why the Climber's 3. 0 is...

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Designed for climbing on the hottest days, the Castelli Climber's 3. 0 SL 2 Jersey maximizes airflow to keep us cool when the sun shines directly down on us. On the back of the jersey is StradaPro 3D fabric which is engineered to block over 90% of UV rays, while the Flusso 3D fabric on the front...

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Built for speed on the summer's toastiest days, the Castelli Climber's 4. 0 Jersey provides us with the airflow and rapid cooling we need to ride at our best through the summer heat. This jersey combines the CFD-based seam construction we know from the Aero Race 7 Jersey with aerodynamic 3D mesh...

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Built for hot summer days in the mountains, Castelli's Climber's 4. 0 Jersey keeps us cool without sacrificing speed with its lightweight fabrics and rapid cooling properties. This high-alpine-focused jersey features the same aerodynamic CFD-based seam construction as the Aero Race 7 jersey but...

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Castelli seeks to combine aerodynamics with perfect fit and comfort, and that's why the Climber's 4. 0 Limited Edition Jersey is designed to be a lightweight aero jersey that will excel at dealing with the rigors of road racing in the heat and high in the mountains. It sees maximum aerodynamics...

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The radar is showing red. That may stop some from getting in a quick 20-miles of cycling, but not us: we have the Quick-Step Climber'S 3. 1 Jersey. Specially engineered to draw away heat while pulling in air, we keep totally cool and level-headed for long bouts on the roadway.

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The jersey that Soudal Quick-Step team athletes use when they want to stay cool while riding uphill in summer.

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