The Assos Fastlane Rock Short-Sleeve Jersey rolls with vibrant, geometric energy on summertime training rides. A blend of fabrics on the front, sleeves, and rear of the Fastlane speaks to its performance-focused construction and promotes significant UV ray protection during extended training miles. As you're pushing high-watts on interval sessions, the circular structure of the Type.105 Hill fabric promotes chest and abdomen comfort and freedom of movement during heavy breathing. Stabilizator V7 fabric on the rear of the Fastlane works to speed up evaporation as well as stabilizes pocket contents as you dance out of the saddle on steep climbs. The smooth, raw-cut sleeves reduce pinching, and the Push Pull Light fabric — developed by Assos — offers a quick-drying, warp-knit that is also UPF 50+.