Straight off the backs of our Pro team riders our in-house Speed Shop designed this jersey for superior wind efficiency anatomic fit & comfort. The sleeve pattern is so revolutionary we patented it. P.R.O. Transfer In-R-Cool® fabric powered by coldblack® provides optimal cooling & reflective sun protection P.R.O. Aero fabric with In-R-Cool® technology in key leading edges provides enhanced Aerodynamics Patent pending anatomic sleeve construction Flatlock seams for smooth interior construction Full length zipper for venting Elasticized gripper on back to keep hem in place Two back pockets with hidden sweat-proof pocket Form Fit Weather Forecast: Warm & dry Temperature rating 20 degrees Fabrics: Body: 80% polyester 20% elastane/UPF 40 Technology: coldblack Weight: 196 g/m 2 Back: 100% polyester/UPF 40 Aero Panels: 78% polyester 22% elastane/UPF 50