Please order size according to below size chart and your feet measurement.

5 B(M) US Women = 4 B(M) US Men =Suggest Feet Size 8.86"

5.5 B(M) US Women = 4.5 B(M) US Men =Suggest Feet Size 9.05"

6.5 B(M) US Women = 5.5 B(M) US Men =Suggest Feet Size 9.25"

7 B(M) US Women = 6 B(M) US Men =Suggest Feet Size 9.45"

8 B(M) US Women = 6.5 B(M) US Men =Suggest Feet Size 9.65"

8.5 B(M) US Women = 7 B(M) US Men =Suggest Feet Size 10"

9 B(M) US Women = 8 B(M) US Men =Suggest Feet Size 10.24"

10 B(M) US Women = 8.5 B(M) US Men =Suggest Feet Size 10.43"

10.5 B(M) US Women = 9.5 B(M) US Men =Suggest Feet Size 10.83"

11 B(M) US Women = 10 B(M) US Men =Suggest Feet Size 11.02"

12 B(M) US Women = 11 B(M) US Men =Suggest Feet Size 11.4"

13 B(M) US Women = 12 B(M) US Men =Suggest Feet Size 11.6"

• 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 includes 1 pair of shoes, 1 charging cable

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.