Finger exercises can improve finger strength and flexibility. It's made of premium silicone, doesn't tear, break, or deform easily, and is small enough to fit in your gym bag or pocket. Features: 1. [Ideal for sports Lovers] Finger strengtheners can improve finger strength and daily chores (driving, typing, writing, working, etc.) for athletes (rock climbing, fitness, tennis, baseball, boxing) and musicians (guitar, bass, piano, violin). 2. [6 resistance levels to choose from] The Silicone Guitar Finger Trainer offers you six resistance levels, including 6.6LB, 8.8LB, 11LB, 13LB, 17LB, and 21LB. You can choose the right level for your grip strength. 3. [Quality Material] Our finger stretcher is made of high-quality silicone material, which is safe and durable, not easy to tear, and lasts a long time. 4. [Lightweight Design] The Finger Trainer is small and lightweight enough to fit in a gym bag or pocket. You can enjoy exercise at work or at leisure. Exercise your hands with a finger stretching machine anytime, anywhere. 5. [6 resistance levels to choose from] The Silicone Guitar Finger Trainer offers you six resistance levels, including 6.6LB, 8.8LB, 11LB, 13LB, 17LB, and 21LB. You can choose the right level for your grip strength. Specifications: Product Name: Finger Exerciser Material: Silica gel Resistance rating: 6.6LB, 8.8LB, 11LB(Primary Resistant : Gray)； 13LB, 17LB, 21LB(Advanced Resistant : Black) Color: Black/gray Note: (1) Due to the lighting effects and shooting angles, there is a color difference in the product, please understand. (2) Gray is the primary version with a lower resistance level, and black is the advanced version with a higher resistance level, it is recommended that you purchase in combination (1 gray and 1 black) Package includes: 1x Hand Gripper