Reach for Giro's Proof Winter MTB Shoe Covers when insulation and protection from the elements is crucial. These wind- and water-resistant booties feature special stretch neoprene that maximizes warmth and minimizes bulk. Built-in flex zones offer an unmatched fit and range of motion. The interior is lined with thermal fleece for extra insulation and warmth. The molded rubber soles feature aggressive lugs for improved traction and durability when you're off the bike. You'll also appreciate the locking heel zippers and reflective accents.