Features: Material: Grip strengtheners are made of sturdy silicone material with good elasticity, soft and stretchable, not easy to tear or break, can be used for a long time, and are easy to clean. Anti Slip: The surfaces of the hands strengthener adopts a non-slip grain design, effectively increasing the friction between the palm and the holder. Suitable for people of all ages, they are light and easy to carry, making them usable anywhere. 3 Strenght Levels: 3 different strength can adjusted, suitable for each training stage. Small and portable, you can exercise hand muscles at any time. Ergonomic Design For All Hands: The grip strength trainers is ergonomically designed and fits well for all hand sizes, which perfect for men, women, seniors and teens. EASY TO CLEAN: You can rinse the surfaces with water simply, no need to use detergents; After washing the hands grip rings, the color is still bright and vibrant, no color loss or damage to materials. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Size: 8x7.8x2cm Material: Silicone