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 Tevas most versatile rubber compound that successfully blends high friction and good durability for slip-resistance. Measurements: Weight: 9 oz Product measurements were taken using size 7, width B - Medium. Please note that measurements may vary by size. Weight of footwear is based on a single item, not a pair.