KEEN.BELLOWS FLEX technology in the uppers allows for more bend and less wear KEEN.DRY waterproof, breathable membranes seal out wet weather PFAS-free durable water repellent (DWR) finish helps moisture bead up on the surface Speed hooks allow for easy lace adjustment Contoured fit follows the contours of your feet Achilles pads add comfort Removable PU insoles provide arch support Direct-attach, air-injected Luftcell PU midsoles provide cushioning Stability shanks boost support Eco Anti-Odor technology helps prevent the growth of odor-causing bacteria in the footwear TPU outsoles with nonmarking 4 mm multidirectional lugs provide lightweight durability and traction Questions? Leave a comment below!