Features: 1.Improve finger strength for athletes (basketball,rock climbing enthusiasts, fitness, tennis, baseball, boxing, tennis, golf and shooting) and musicians (guitar players, bass players, pianists and violinists). 2.Help prevent injuries and muscle imbalances from the overuse of "crushing" type hand and finger grip exercises. 3.The strength trainer is ergonomically designed and fits well for all hand sizes, which perfect for men, women, seniors and teens. 4.Portable, durable, no odor, no stains, no edges, no noise, easy to use. 5.Exercise kit for seniors, to -provide physiotherapy and therapeutic rehab to find relief from a life time of knuckle use. Specification: Color: Random Material:silicone Size: As pic Quantity: 1pc Package includes:1 Silicone Finger Traine Note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you