Humanized design: compact and , easy to grip and control, very suitable for exercising hand muscles, finger and wrist strength Elastic and reliable: the finger exerciser is made of quality silicone, soft and reliable, strong and sturdy, with nice elasticity and flexibility, not easy to break or fade, applicable for most people, you can use it for hand therapy at different places, relieving wrist and finger fatigue the silicone grip strength trainers provide you with 6 levels of resistance bands, you can choose the right levels for your own grip strength, or you can improve your grip strength by gradually increasing the resistance levels, suitable for different phases of your finger exercise Wide 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 flexibility Easy 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 fingers into the rings, then you are ready to start exercising. It's time-saving and convenient, and you can exercise , office or gym. Material: Silica gel colour: black+grey Package Contents: 1 x Hand Grip Strengthener kit 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 picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.