The Tirra will give you the freedom you need in a sandal.Synthetic upper is quick-drying.Neoprene foam and stretch mesh lining. Microban Zinc antimicrobial protection.Cushioning sponge EVA topsole.EVA midsole for extra cushioning and comfort.Molded nylon stability shank.Shoc Pad in the heel absorbs impact.Spider Rubber outsole: A patented process produces Teva's most versatile rubber compound that successfully blends high friction and good durability for slip-resistance.