Great For You - If you are suffering rheumatoid arthritis, arthritis, carpal tunnel syndrome, tendinitis, tennis elbow, and are recovering from a fractured or broken wrist, or tendon surgery, then our hand-gripped strengthener is the perfect exerciser for you Portable & Ergonomic Design - The finger strengthener is ergonomically designed and upgraded - the thumb hole expanded to 0.8'and the other 4 holes to 0.67, fit for men, women, seniors, and teens. Due to its small and durable size, you can easily bring and use it anywhere Upgraded 4 Levels Meeting Multiple Needs - The rally value of our hand-gripped strengthener is from 8 to 21 lb. And the finger strengthening exercise works out for all fitness levels, from beginner to advanced, in-home or gym. You may use different bands based on strength requirements Safe, Durable & Flexible Made of 100% high-quality silicone, BPA-free. Our finger exerciser is WASHABLE and Durable