No one likes to ride in wind and rain, but sometimes that's all we have to work with especially in the volatile weather of the transitional seasons. For days when the temperatures don't call for ski level thermal gear but the wind and rain threaten our extremities, we roll Pearl Izumi's P. R. O. Barrier WxB Shoe Cover and we roll dry. These shoe covers incorporate P. R. O. Barrier WxB fabric on the outside and warm fleece on the inside, a combination that repels water and wind while keeping your feet cozy in temperatures as low as 40 degrees Fahrenheit. The P. R. O. Barrier's fit has been updated to include Pearl's Mk2 two stage closure, which opens the covers nice and wide to get on, and then seals them up for the snug fit you'd expect from shoe covers. The soles are Kevlar infused for durability and the wind and water resistant shells have reflective highlights to keep you visible in low light conditions. The Pearl Izumi P. R. O. Barier WxB Shoe Covers are available in five sizes ranging from Small to XX Large in the colors Black and Screaming Yellow. Please note that these shoe covers are best used with external road cleats.