Catkit Unisex Luminous Sneaker Fashion Women Men USB Charging LED Shoes Black Synthetic PU NOTICE: Do Not Use "Size Chart" Link, Our size is not U.S. size. Please compare size measurement in Products Description before you buy. Closure Type:Lace-UP. Heel Type:Flat with. Gender: Unisex. Shoe has 7 Static Colors and 1 Color Changing Mode: Red, Yellow, Green, Blue, Purple, Light blue, White & Color Changing USB rechargeable, one charge for 2~3 hours offers 8~9 hours of glow time. Shoes can be cleaned by soft fabric, But cannot be washed.