Size instruction: Shoes are true to size. You can follow size chart in below detail description or contact us for suggestion if there is any problem.
Operation instruction: Hidden switch button comes beside the USB charging port. Press the switch to light up the shoes. Long press the switch for seconds to turn off the light.
Light Mode: 1.Red(steady) -2.Blue(steady) -3.Green(steady) -4.Purple(steady) -5.Skyblue (steady) -6.Yellow(steady) -7.White(steady) -8.White(Quick Flashing) -9.Auto-change mode in 7 colors - 10.Red Racing light mode -11.Blue Racing light mode -12.Green Racing light mode -13. Colors racing change mode -14.light off
Charge instruction: Easy charge with USB charging cable like cellphone to computer or power bank for over 3 hours when power is off.
Package includes 1 pair of shoes, 1 charging cable