100% Waterproof Dual-density extreme comfort insole with built in channels help keep feet cool, dry and comfortable Since the boot is built slightly wider, we recommend half sizes order down a size Commercial Grade providing a slightly wider fit Reinforced Upper at Toe, Heel and Pull-On Tabs for maximum durability SRC-Rated Outsole provides the best slip resistance available and is non-marking and oil-resistantVendor Style Number: XMW-000