These Arctic Waterproof Deep Winter Shoe Covers from GripGrab are one of the warmest shoe covers available on the market. They are ideal for very cold winter days. Made from 4 mm waterproof neoprene with a hollow fibre lining they offer maximum thermal insulation. The Arctic incorporates the EUROBIKE Award winning technology; IntelliSeal™. An ingenious technology that greatly enhances the durability, fit and water resistance of shoe covers. The Arctic shoe cover features the new zipperless shoe cover design, that gives a perfect and snug fit around the shoe and calf, so water is kept out from the top and prevented from penetrating through a zipper. Recommended for road shoes. Compatible with most types of pedal systems.