The Pearl Izumi Women's P.R.O. Triathlon Short are constructed with lightweight, aerodynamic and friction-reducing materials to get you to the finish in record time. The P.R.O. In-R-Cool fabric provides UV sun protection while reflecting the sun's heat, keeping you at your best. It is also very aerodynamic, and the anti-bacterial, tri-specific chamois regulates heat with active carbon yarn and silver ions. Flat-lock seams and low-profile hems give you a streamlined, comfortable fit and a rear pocket lets you stash some nutrition for out on the course.