USB Charging LED Light up Shoes Sports Dancing Sneakers Synthetic PU Leather/Rubber Outsole SIZE TIPS: Unisex. True to size CHARGE INSTRUCTION: Easy charge like your cell phone with the attached USB charging cable.Switch on the shoes when received and light up until all power gone.Then charge both shoes for 3 hours. SWITCH INSTRUCTION: Hidden switch button, 1" beside the usb outlet, along the inside hem. Push around and you'll find the "click." Press it to switch on.It starts with steady red light.With each press,it changes to another light mode.Press the switch for 9 times to turn the light off. Each light up shoe has 7 static colors (red, yellow, green, blue, purple, aqua and white) and 4 different dynamic flashing modes. A quick press to light up and change colors with single press, long press to turn off.