SAGUARO 7 Colors USB Charging LED Lighted Luminous Couple Casual Shoes Sneakers for Unisex Men Women Leather Please compare the chart size in the description with your feet length carefully before ordering! PU leather, Rubber sole. Lining Material: Cotton Fabric. 7 different colors in one pair (Red, Green, Blue, Yellow, Turquoise, Purple & White). There is built-in battery inside of the shoe. The LED light can be recharged. By about 2-3 hour's recharging, the shoe light can keep on for about 8-10 hours. Shoes can be cleaned by soft fabric. But cannot be washed. It's safe to play. The light can be charged by mobile powers which you use for charging your mobile phones.