Material: Silicone_x000D_Size (approx.): for men: 20cm, inner diameter: 60MM; for women: 18cm, inner diameter: 56mm_x000D_10cm=100mm=3.94inch_x000D_Function: Eliminate static electricity1Our Anti-Static bracelet can release static, improve sleep quality, increases physical performance, reduces inflammation, is great for your and your family! 2_x000D_Easy to wear and remove. 3_x000D_It is not only anti-static bracelet, but also a fashion ornaments. 4_x000D_Easy to wear and remove, waterproof and washable. 5_x000D_Suitable for for running, cycling, jogging, and other sports or any active activity where you need a power boost or increased energy.1 pcs Anti-Static BraceletDue to the different monitor and light effect,the actual color maybe a slight different from the picture color._x000D_Please allow 1-2cm differs due to manual measurement.