SAFE, DURABLE AND FLEXIBLE: Our 3 level hand finger resistance bands are made of Premium 100% silicone rubber, BPA-free, non-toxic harmless silicone. different from other "small finger holes bands" on the market, not easy to tear. SAFE AND DURABLE not easy to tear. It is WASHABLE and can be use frequently and comfortably.ERGONOMIC DESIGN: If you suffer from rheumatoid arthritis, arthritis, carpal tunnel, tendonitis, tennis elbow and are on the way to recovery from a fractured or broken wrist, or tendon surgery, then this is the perfect gripper for you.REHABILITATION & PREVENTION: Strengthen your wrists, improve the dexterity of your fingers and increase the strength your hands can apply while reducing fatigue. Its rally value is from level 1 to level 3, is a great tool for beginnersHOW TO USE: Please put the finger extensor exerciser rings on the first joint of your finger. The biggest circle is on the thumb. You can use all five fingers rings, or only 2-3 fingers rings, to exercise fingers. Level1-Blue, Level2-Yellow, Level3-Orange. Use different bands based on force requirement.BRING IT ANYWHERE YOU GO: A Hand grip strengthener that anybody can use, Male, Female, Seniors or Teens. Suitable for all age groups and fits well for all hand sizes, and with its small and durable size you can literally bring and use it anywhere.