It's hard enough to ride a century, but pedaling for hours under a ripping sun Torture. Pearl Izumi can't change the weather, but its P. R. O. In R Cool Men's Cycling Jersey can help keep you from boiling over, with an innovative fabric and unique temperature reducing treatments that help keep your heat levels solidly in the manageable range. It starts with P. R. O. Transfer fabric, which is engineered to wick moisture like lightning and dry in a snap, so moisture moves quickly away from your skin and takes heat with it. Topping off the fabric are strategic mesh inserts and a pair of special technologies: In R Cool and Minerale. Minerale utilizes volcanic fibers to accelerate evaporation, fight odor, and provide UPF 40 sun protection, while In R Cool reflects the sun's rays, lowering the temperature of the fabric by up to 35 degrees to help you stay cool and crushing it.The P. R. O. is no three trick pony, though. It keeps things moving with flatlock seams, which prevent the irritation and chafing caused by traditional round seams, and has four back pockets one with a zipper and a sweatproof design to keep your snacks, bottles, phone, and key tools within easy reach. The full front zipper lets you ventilate to your heart's content, and the elastic hem gripper makes sure your back stays covered and your kit stays aerodynamic.