The Castelli Climber's 4.0 Women's Jersey is part of Team Soudal Quick-Step's official kit.Featuring a bright, cheerful graphic, it has been developed and refined using feedback from pro riders, who requested a cool jersey for climbing the Alps in the July heat, without sacrificing aerodynamics.Constructed from a mixture of fast, 3D mesh fabrics, using the same CFD-based fabric and seam placement techniques perfected in the creation of Castelli's super-speedy Aero Race 7.0, this jersey is engineered for a light weight, rapid cooling and rapid drying.Since the sunshine on the Alps is strong, the back has been engineered to block 90% of UV rays. Whether you're a super-competitive Alpine climber or just enjoy a mid-summer lunchtime ride, this jersey will speed you on your way and boost your ride enjoyment.Features:A jersey designed for mountain climbing during the hottest days of summerDesigned for comfort with speed, as requested by the prosPart of Soudal Quick-Step's official team kitSoft and stretchy, with a feminine, racing fitBenefits from research for the Aero 7.0 racing jerseyWith CFD-based fabric placement and seam constructionConstructed using light, aerodynamic, 3D mesh fabricsFlusso 3D fabric used on the frontBreathable StradaPro 3D fabric on the back blocks 90% of UV raysWith airflow shoulder constructionRaw cut, elbow-length sleevesWaist anchored by elastic that support the pocketsContains bluesign® certified fabricsWeighs 113g (S)Made for a temperature range of 22-40°C