GORE BIKE WEAR Men's OXYGEN REFLEX FZ Jersey,Red/White,Small 86% NYLON; 14% ELASTANE; MESH -1: 100% POLYESTER; MESH -2; 94% NYLON; 6% ELASTANE; Mesh inserts for ventilation under arms, in back and at nape Reflective band on front, side and back 3-compartment patch pockets on back Full length zip with semi-lock slider