Pearl iZUMi Pro Barrier WxB MTB Shoe Cover 100% Other Fibers Imported P.R.O. Barrier WxB fabric provides optimal wind and water protection; fleece lined interior for warmth; waterproof, taped external seams Second generation two stage hook and loop closure provides both sleek fit and easy on and off Durable Kevlar bottom holds up to trail use Synthetic leather toe bumper adds scuff protection; bottom is designed to fit treaded MTB style shoes BioViz high visibility colors and reflective elements