The sealskinz neoprene overshoes are made of close fitting neoprene material with a storm flap pull on loop and hi vis reflective details for additional visibility kevlar reinforcement around the toe and heel provide excellent abrasion resistance ad key features hard wearing neoprene material with storm flap inside zip close fitting with silicone leg gripper and easy pull on loop kevlar heel and toe for wear resistance thermal rating 3 perfect balance of warmth and breathability