Sanyes USB Charging Light Up Shoes Sports LED Shoes Dancing Sneakers PU leather Rubber sole. Lining Material: Cotton Fabric. Size Instruction:Since sizes can vary between brands. Please refer to the following size chart. measure your heel-to-toe length and than choose the size fit your best. Please pay attention to the distinction between men and women size Switch Instruction: Hidden switch button beside the charging port. Press it to switch on. With each press,it changes to another light mode. Press the switch for 12 times to turn the light off , or keep pressing for 3 seconds to turn off the power Light Modes: light on from 1.red(steady) -2.blue(steady) -3.green(steady) -4.purple(steady) -5. Sky blue(steady) -4.yellow(steady) -7.white(steady) -8.white(twinkle) -9.slow auto-change mode -10.fast auto-change mode -11.twinkle + auto-change mode -12.light off Charge instruction: Connect a USB cable from the computer, mobile phones and other chargers, mobile power can also be used, safe and reliable. One charge for 2~3 hours can provide 8~10 hours of lighting time