Features： 1、MINI: Palm size, compact and convenient, flexible, convenient for store; Great to fit into your gym bag or handbag. You can get repetitions in while commuting, at the office or anywhere. 2、EASY TO CLEAN: You can rinse the surface with water simply, no need to use detergent; After washing the hand grip ring, the color is still bright and vibrant, no color loss or damage to materials. 3、ANTI SLIP: This grip brings with anti slip particles on the surface to increase friction and protect your wrists; this non slip design also massages your palms and promotes your blood flow. 4、Usage: These rings can be used for crushing, pinching and even extension, with equally amazing results. They are also an awesome option for stress release。 5、Ergonomic Design For All Hands: The grip strength trainer is ergonomically designed and fits well for all hand sizes, which for men, women, seniors and teens. Specification： Item Type: Hand Grip Ring Material: Silicone Uses: Grip trainer for adults, physical therapy ball for hand spasms, arthritis and strokes, stress ball for cell phone and computer enthusiasts, squeeze ball for people with ADHD. Product specifications: 20-30LB about 10KG-14KG, suitable for entry level or elementary school students or secondary school students to use primary training. Package List： 1 x Hand Grip Ring