96%Polyester,4%SpandexImportedBreathable, smooth fabric upper. Sock-like flexibility and comfort.Soft, flexible opening and convenient strap for easy on and off.Elastic material, compressible and foldable, easy to take outdoors.Exclusive rubber sole, non-slip. Reinforced toe for extra durability.Various styles are perfect for beach, swimming, pool, ocean, water aerobics, diving, sailing, boating, kayaking, surfing, yoga, jogging, walking, fishing, beach volleyball, long-distance flying, driving a car, vacation essential equipment.