This O&N Fashion LED shoes carry with Chinese size, Maybe you can see our size chart , Please measure your feet long .For comfortable to wear, you can choose a bigger size. Thanks for your shopping.

4.5 B(M) US Women/3 D(M) US Men---Size 35 Fit foot length 22.5-23cm
5.5 B(M) US Women/4 D(M) US Men---Size 36 Fit foot length 23-23.5cm
6.5 B(M) US Women/4.5 D(M) US Men---Size 37 Fit foot length 23.5-23.7cm
7 B(M) US Women/5 D(M) US Men---Size 38 Fit foot length 23.7-24cm
8 B(M) US Women/5.5 D(M) US Men---Size 39 Fit foot length 24-24.5cm
9 B(M) US Women/6.5 D(M) US Men---Size 40 Fit foot length 24.5-25.5cm
10 B(M) US Women/7.5 D(M) US Men---Size 41 Fit foot length 25.5-26cm
11 B(M) US Women/8.5 D(M) US Men---Size 42 Fit foot length 26-26.5cm
12 B(M) US Women/9 D(M) US Men---Size 43 Fit foot length 26.5-27cm
13 B(M) US Women/9.5 D(M) US Men---Size 44 Fit foot length 27-27.5cm
14 B(M) US Women/10.5 D(M) US Men---Size 45 Fit foot length 27.5-28cm
14.5 B(M) US Women/11 D(M) US Men---Size 46 Fit foot length 28-28.5cm

• Size Tips:We suggest you check our detailed size measurements in the 'Product Description' part.The shoes are medium width.And this shoes is unisex.
• 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.
• 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.
• Light Modes:1.light on from red(steady)-2.green(st')-3.blue(st')-4.yellow(st')-5.skyblue(st')-6.purple(st')-7.white(st')-8.auto-change mode-9.light off
• NOTE:Please do not use it as running shoes!

Size Tips:We suggest you check our detailed size measurements in the 'Product Description' part.The shoes are medium width.And this shoes is unisex.