Climber's 2.0 Jersey Women's Outdoors Our original Radar® eyewear combined

Our original Radar® eyewear combined everything we learned from decades of research with the world’s best athletes

625 Fill Power White Duck Down

Thigh ventilation system with watertight YKK® Aquaguard® zippers

Special features include STACC ventilation

B-DRY Waterproof - There’s no denying feet sweat and trails can get muddy

Climber's 2.0 Jersey Women's Outdoors Our original Radar® eyewear combinedCastelli made this jersey specifically for hot weather, with a meshy fabric on the front that allows a lot of air to flow through the fabric to cool you, while on the back there is a fabric that blocks over 90% of UV rays while also being airy and lightweight. But don't think of it as a niche jersey that you only bring out for hot days. Add a base layer underneath it and you'll use it from mid spring to early fall, and the stretch of the fabrics that