Light, dry and fast = Castelli Climber's 4.0 is ready for hot summer rides! Racing in the Alps in July is for a select few, but the products that come out of that experience are absolutely amazing for the rest of us. Castelli made this jersey for hot days in the high mountains, based on direct feedback from the pros. They wanted a jersey to keep them cool on hot days without sacrificing aerodynamics. The Climber's 4.0 uses the CFD-based seam construction and the most aerodynamic 3D mesh fabrics for optimal cooling. These fabrics also have a great soft and stretchy quality to them, giving this jersey a comfortable fit too, which you need for big days in the mountains. And since this jersey is meant to be used in the sun, you'll certainly appreciate that the fabric on the back blocks more than 90 percent of UV rays.

Features: 

• CFD-based fabric placement and seam construction
• Engineered rapid cooling, light weight and aero efficiency
• Airflow shoulder construction
• Flusso 3D fabric on front and sleeve
• StradaPro 3D back for breathability
• Elbow-length stretch sleeves with raw-cut edge
• YKK® Vislon® zipper
• Elastic around waist to keep jersey in place and support pockets
• Recommended use in temperature range between 22°C and 40°C
• Contains bluesign® certified fabrics
• Weight: 164 g
• Fabric: 93% Polyester, 7% Elastane

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