Silica Gel Portable Hand Grip Strengthener Ring Forearm Wrist Finger Exerciser Carpal Expander Rock Climbing Athletes Stress Relief Features: 100% brand new and high quality. 3 LEVEL RESISTANCES: The grippers can be workout for crushing, pinching and even extension, with amazing results.And have 3 levels:30LB~50LB,allowing you to gradually increase the difficulty of your training as your strength improves.Which set from beginner to professional,relaxation or athletics.Useful and popular products make a perfect gift AWESOME FOR REHABILITATION & FITNESS & RELAXATION :It can improve your finger strengthen and dexterity,more forearm Muscularity. So it workout for rehabilitation,long-time typing.Ideal for athletes(tennis, basketball, boxing,golf and shooting)and musicians (guitar players, bass players, pianists and violinists). EXERCISE YOUR HANDS FROM ANY WHERE:The grippers are made of natural silicone, soft and odor-free.Whether you are at home, work, walking, in the car or doing your favorite sport as the rings are lightweight and easily portable. SIZE FOR PERFECT, COMFORTABLE FIT :Ergonomically designed and fits well for most hand sizes, which perfect for men, women, seniors and teens(please check the size chart as the pics), to maximize the benefits of the exercise and ensure a challenging, and safe experience. Specification: Color: green(30LB), black(40LB), red(50LB) Material: silica gel Outer diameter: 88mm/3.46" Inner diameter: 45mm/1.77" Weight: about 100g Quantity: 1pc Note: Transition: 1cm=10mm=0.39inch Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 1 Hand Grip Ring