Features of the Keen Men's Durand II Mid Waterproof Boot Speed hooks for easy lace adjustment Removable, Dual-Density EVA Footbed with arch support for all-day comfort Direct-attach PU Midsole for resilient cushioning Dual-compound rubber Outsole for added durability and traction 4mm Multi-directional lugs for traction Stability shank delivers lightweight support Contoured heel lock for a more secure Fit KEEN. DRY Waterproof, breathable membrane Cleansport NXT for natural odor control Waterproof, premium nubuck leather Upper Breathable mesh lining