Built to provide superior performance on the trails, the All Out Blaze Sieve is designed with features that make it an agile, responsive hiking shoe that can handle water and rugged terrain. Waxy waterproof leather fabric upper repels water. Lycra(TM) neoprene mesh collar for easy on and off. M Select(TM) FRESH technology reduces odor. UniFly(TM) midsole protects from rough terrain. TC5+Vibram(TM) outsole provides traction. 1lb 5 oz. total weight.