Dual-density extreme comfort insole with built in channels help keep feet cool, dry and comfortable Commercial Grade providing a slightly wider fit Since the boot is built slightly wider, we recommend half sizes order down a size. Reinforced Upper at Toe, Heel and Pull-On Tabs for maximum durability 100% Waterproof The XTRATUF Wheelhouse fits the bill for a commercial grade version of the Ankle Deck Boot. When you are on your feet 12 hours or more, feet often will swell. This boot has a wider fit to address this issue and keep you comfortable. The 6-inch upper is reinforced in high wear areas, such as the toe and heel, for maximum durability. This boot features an EVA/PU blend insole for all-day comfort, and an oil resisting, SRC-rated flat outsole for excellent traction.