The louis garneau tri course m 2 short sleeve jersey is a jersey thats tuned to the needs of the triathlete the ergonomic fit is designed to follow the contour of your body with minimal excess fabric to create drag for a winning combination of comfort and performance whether youre wearing it beneath your wetsuit or on the finishing stretch of the run itll also help you keep your cool even on the hottest days thanks to coldblack technology and moisture wicking fabrics