To prevent overheating during either training or competition, Pearl Izumi's Select Tri SL Sleeveless Jersey uses technical fabrics that give you an upper hand on the weather. The jersey was constructed from Select Transfer fabric with In R Cool technology. The Select Transfer fabric has a UPF 50 rating in order to shield your skin from the sun's harmful UV rays. Direct Vent side panels provide a cooling airflow through the jersey, which has been furthered by the incorporation of a twelve inch front zipper that lets you fine tune air intake for temperature regulation. At the back of the jersey, two easy access pockets have been included to house your race nutrition. For training purposes, Pearl Izumi also included reflective elements in order to increase your visibility to motorists while training in low light conditions. The Pearl Izumi Select Tri SL Sleeveless Jersey is available in five sizes from Small to XX Large and in the colors Fiery Redblazing yellow and Blackstormy.