Pearl Izumi Men's Pro In-R-Cool Jersey Body: 87% Minerale Polyester 13% Elastane, UPF 50+ Technology: Coldblack Weight: 157 G, M2 Mesh Inserts: 84% Polyester 16% Elastane Sleeves: 80% Polyester 20% Elastane, UPF 40+ Technology: Coldblack Imported Fall/Winter 2013 The legendary fit, performance, durability and comfort of this classic style is further optimized with the addition of In-R-Cool technology The perfect balance of anatomic fit, performance engineered materials and the personal interface between athlete and gear A clothing system that works to help you maintain the perfect temperature for the weather conditions and activity range day in and day out