Smooth fabrics like socks that keep best wear-feeling even in water.Closed way:sleeveInner material: breathable liningSole Material:RubberFunction:non- slip wear- resistant breathable sweat- absorbent quick- drying light packageApplicable people: both men and womenShoe size:33/34,35/36,37/38,39/40,41/42,43/44Product role: can be used for beach,snorkeling,river,surfing,etc.Product advantages: lighter than shoes, better protection than socks,cost- effective outdoor equipmentBreathable sole, breathable punching insole, good ventilation.Lightweight, soft and free to twist, it fits easily into your pocket.Elastic shoe mouth, good wrap, great applicability,long- wearing feet do not hurt.VARIOUS SIZE AVAILABLE -- fit different feet,little kids, big kids,men,women are available.