... 2.0mm warm, lightweight, stretchable neoprene, good fit with most boots.Dot printing on bottom, anit-slip and durable Item YKSK004Description 2.0MM flat-lock neoprene ... , L, XLFeatureMade of warm, lightweight,stretchable, highly water resistant of 2.0mm neoprene. Good fit with most boots. Wear them while swimming, biking ...