Teva Tirra Women's Walking Sandals Water Channelling Lug Pattern - Designed to let water underfoot flow freely to enable to you to keep a sure-footing. Neoprene Foam - For enhanced comfort and quick drying. Nylon Shank - Enhances mid-foot stability, keeping your running gait as efficient as possible. Stretch Mesh Lining - Enhances comfort and flexibility. Shoc Pad - Heel rubber infused into the midsole for superb shock absorption and helps to set up a smooth transition.