AnnabelZ LED Shoes USB Charging Light up Glow Shoes Men Women Fashion Sneakers Flashing Luminous Sports Shoes leather-and-rubber 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 Charge instruction: Easy charge with USB charging cable like cellphone to computer or power bank for over 3 hours when power is off. Package include 1 pair of shoes, 1 charging cable