The Castelli Unlimited Shoecover has been engineered for the rigors of riding off-road. The warm fleece-backed fabric provides plenty of warmth and the added DWR treatment sheds water. Under the foot is a durable abrasion-resistant fabric with a Velcro closure to accommodate the bulky soles of gravel and MTB shoes. A long zipper and stretch fabrics on the back make the shoecover easy to put on and ensure a perfect fit that isn’t tight or constrictive.