The Keen Men's Durand Mid WP Hiking Boot is most comonly known for its amazing comfort and unbelievable durability from the first step to the milllionth. This boot is crafted of KEEN PU and dual compound rubber outsole. They deliver durable, dependable longevity for the long haul. PU resists breakdown and compression, while preserving its shock-absorbing qualities no matter how many miles you put on them, keeping you comfortable while hiking. Feet stay dry and comforatable thanks to the KEEN.DRY waterproof, breathable membrane. This men's waterproof boot is American built.