The Teva Churn Evo Womens Water Shoes feature a tough outsole with Spider Original rubber, designed to grip strongly even in wet environments & drainage channels in the forefoot which allow water to escape. Torsional strength is supplied by a nylon shank which keeps the foot stable & in control. The upper is constructed of a tough synthetic leather & mesh for great breathability & fitting. Underfoot youve got an impact absorbing Shoc Pad which gives you convenience & cushioning under your heel. An easy on/off bungee lacing system allows for a snug fit without dealing with tieing laces