Features of the Sugoi Resistor Aero Shoe Cover PU coated stretch Lycra offers lightweight wind protection and water resistance Streamlined Fit with an extra tall cuff for improved aerodynamics Offset rear zip to reduce Achilles tendon irritation with reflective detailing for visibility Abrasion resistant heel, toe, and under shoe panel for increased durability Reflective heel pull tab and silicone gripper elastic at cuff for a secure Fit