A hard-wearing all-around neoprene bootie that features our premium 3 mm high stretch neoprene, sealed seams, skin-out top edge to seal against the foot, and adjustable opening under the foot to work with any shoe. 3mm neoprene for water protection and warmth, velcro closure under foot for perfect fit, bottom opening accommodates road, gravel or MTB shoes, sealed seams, neoprene skins at cuff to keep water out.