.Two of the main muscle groups in your forearm are the flexor muscles - used when squeezing your fingers - and extensor muscles - used when extending them. .REHABILITATION & PREVENTION - Great for rheumatoid arthritis, arthritis, carpal tunnel, tendonitis, tennis elbow and are on the way to recover from a fractured or broken wrist, or when you type, text or any other activities which use your gripping muscles. .ERGONOMIC DESIGN FOR ALL HANDS - Suitable for all age groups and fits well for all hand sizes, different from other "small finger holes bands" on the market. Portable and easy to fit in bag or pocket. You can get repetitions in while driving, at the office or anywhere . USE IT ANYWHERE ANYTIME Our finger extensor exerciser has a small size and modern looking. You can use it while walking, traveling (car, airplane, bus), in office, school, watching TV or any place you want to exercise. .stretcher hand grip resistance bands finger stretcher hand resistance finger stretcher hand extensor exerciser finger stretcher hand resistance bands finger stretcher hand finger stretcher hand grip forearm trainer exerciser finger resistance band finger exerciser & hand strengthener finger exerciser for guitar players finger exerciser for arthritis finger exerciser & hand strengthener arthritis forearm ring hand exercisers forearm grip workout forearm grip strengthener Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!