Patent leather upper. Soft microfiber lining allows moisture to wick and helps keep your feet cool and dry. Dual density midsole is made with TPU and nylon mixed with glass fibers for extra firmness and durability. The shank consists of TPU (heel & midfoot area) and nylon mixed with glass fibres (forefoot area). Its dual density provides high wearing comfort. Multi-layered Swing w SS10 sole creates natural instability to emulate the feeling of walking on sand, and allows for better posture, toning properties, alleviation of back and foot pain, and increases shock absorption. Adjustable ankle strap for a custom fit.