Women Men LED Fiber Optic Shoes Light Up Your Night Life! 1.Upgraded fiber optic fabric that provides a colorful visual experience, show your style in party,music festival, nightclub, dance and other indoor outdoor activities; 2.This is a multifunctional shoes,turn off the light, it is a casual sneaker; Turn on the light, it is a fashion and glow shoe, amazing!you will like them; 3.USB charging design is convenient and safe, friendly to both adults and children; Package Included: 1 X Fiber Optic LED shoes 1 X USB Charging Cable Warm tips: 1.If it don't light up properly when you receive the shoes, maybe it just has no power, just plug it in and charge it. 2.We recommend that you use up the power when you use it for the first time, and then fully charge it to ensure your best experience. 3.Please do not immerse it in water. Don't put it in the washing machine. 4.Please stay away from little kids when charging. Size Chart 4 Women/3 Men = EU 35 = Foot Length(in) 8.9 5 Women/4 Men = EU 36 = Foot Length(in) 9.2 6 Women/5 Men = EU 37 = Foot Length(in) 9.4 7 Women/6 Men = EU 38 = Foot Length(in) 9.7 8 Women/6.5 Men = EU 39 = Foot Length(in) 10 8.5 Women/7 Men = EU 40 = Foot Length(in) 10.2 10 Women/8 Men = EU 41 = Foot Length(in) 10.5 10.5 Women/9 Men = EU 42 = Foot Length(in) 10.7 11 Women/10 Men = EU 43 = Foot Length(in) 11 12 Women/10.5 Men = EU 44 = Foot Length(in) 11.3 13 Women/11 Men = EU 45 = Foot Length(in) 11.5 14 Women/12 Men = EU 46 = Foot Length(in) 12