Pro-grade aero shoe cover engineered to optimally insulate and guard against road sprayfeatures:thin and lightweight fabrics designed to insulate on high-intensity ridesflexible waterproof fabric with brushed lining ensures rider comfortprotects feet from light rain and road spraysnug, zipperless slip-on design improves water resistance and aerodynamics360° surround wrapping pattern fits flawlessly with Shimano road shoesmaterials:70% polyester, 30% elastane