Humanized design: compact and lightweight, easy to grip and control, very suitable for exercising hand muscles, finger and wrist strengthElastic and : the finger exerciser is made of silicone, soft and , strong and sturdy, with elasticity and flexibility, not easy to break or fade, applicable for people, you can use it for hand at different , relieving wrist and finger fatigueWide range of users: the hand strengthener relieve wrist bands are suitable for people of different ages, and applicable for rock climbers, tennis players, golf players, baseball players, guitars, pianists, drummers and more, helping people exercise hand muscles, relieve hand fatigue and enhance finger flexibilityEasy operation: The hand strengtheners are easy to use for both beginners and experienced people. You just need to put the bracelet on your wrist, and insert your into the rings, then you are to exercising. It's time-saving and convenient, and you can exercise at home, office or gym.Material: Siliconecolour: BlackPackage Contents:1 x Hand Grip StrengthenerOnly the above package content, other 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.