Pearl Izumi's P. R. O. In R Cool Shorts are designed for the hottest of summer days. Despite their black color, they actually feature a technology called coldblack, which reflects the sun's rays away from the fabric, which keeps the fabric and therefore your skin significantly cooler than it would be otherwise. At the core of the shorts is Pearl Izumi's P. R. O. Seamless 1:1 chamois, which is significantly thinner and lighter than previous Pearl chamoises, but gives up none of the comfort provided by those versions. Its three layer construction and intelligent shape offers support, moisture wicking, and comfort in spades.