Beach socks are made by 83% nylon and 17% spandex,which is super stretchy and breathable. BEACH SOCKS - Wear in the beach Playing Volleyball & Soccer or for Water Sports BEST PROTECTION - Shield Your Feet From the Sun, Hot beach, Asphalt, Sharp Rocks and Corals or Use as Fin Socks When Diving - for Both Warm & Cold Weather CONVENIENCE -- Smooth neck design prevents chafing when wearing our water shoes. It is convenient to put on and take off. COMFORTABLE & FIT -- Breathable and mesh fabrics material provids for breathability and quick drying ,let your foot feel flexible and comfortable. OCCASION -- Socks for Beach, Lake, Swimming,Cycling, Fishing, Garden, Pool,Boating,Sailing,Walking,Beach,Swimming,Boating,Sailing,Lawn, Park, and driving,Playing Volleyball and Soccer ."