Topteck Kid Boy Girl USB Charging LED Light Up Sport Running Shoes Flashing Athletic Sneakers Rubber Rubber sole Convenient hidden switch button beside the charging port. USB rechargeable, one charge for 2~3 hours offers 10+ hours of glow time. Shoes has 7 Static Colors and 1 Color Changing Mode: Red, Yellow, Green, Blue, Purple, Aqua, White & Color Changing (rotates through each color). It can be charged by phone chargers which you use for charging your phones. Please measure your feet length carefully and contrast our size chart before making an order.