When we ride in sloppy conditions our feet will be the first to get soaked and uncomfortable. The Castelli Pioggia 4 Shoe cover lets us stay dry and comfortable in the wettest conditions. The Pioggia 4 Shoecover is made with a Waterproof PU-coated stretch fabric on the exterior which blocks out the cold and water to keep us pedaling. The fleece interior adds extra warmth and a waterproof zipper allows easy entry and exit. Lastly a silicone gripper at the top of the cuff grips to our leg to keep the bootie in place and seal out water.