Humanized Design: Small and lightweight, easy to hold and control, ideal for exercising hand muscles, finger and wrist strength Elastic and : The finger exerciser is made of high-quality silicone, soft and , sturdy and durable, with good elasticity and flexibility, not easy to or fade, suitable for most people, you can use it in different for hand , Relieves wrist and finger fatigue The silicone grip strength trainer provides you with 6 levels of resistance bands, you can the appropriate level according to your grip strength, or you can increase it gradually Resistance levels to grip strength for different of finger exercise Wide range of users: Hand strengthening relief are suitable for people of different ages, suitable for rock climbers, tennis players, golf players, baseball players, guitarists, pianists, drummers, etc., help people exercise hand muscles and relieve hand pain Reduces internal stress fatigue and enhances finger dexterity EASY TO OPERATE: The hand strengthener is easy to use for both beginners and experienced people. All you need to do is put the bracelet on your wrist, insert your finger into the ring, and exercising. It's time-saving and convenient, you can exercise , office or gym. Material: silica gel colour: black Package Contents: 2 x finger trainer 1 x hand strap Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.