A tri singlet has several jobs to do all at once, so it can tough to design one that can pull it off. It has to be comfortable, aerodynamic, cool, and fast drying. The Pearl Izumi Elite in R Cool LTD Tri Singlet is all of these things plus stylish. At the shoulders, Pearl Izumi uses textured Elite Aero fabric to help you knife through the wind and water. The back panels made with Direct Vent mesh to allow heat to escape and keep you cool and dry out of the water. The torso is made with Pearl Izumi's moisture management specialist Elite Transfer. All of these fabrics are designed to shed water quickly and wick moisture away, so you stay comfortable during every stage of the race. If things really heat up, you can cool down quickly with the 10 inch front zipper.