Grip strength trainers are constructed with a that is odorless and to grip. The nonslip balls are also tear and crack resistant for long-term use. Perfectly sized for grip strength training for both men and women, young, old etc. Features -Color:Multi -Material:Stainless steel, PU, polyester -Size:7.20X7.20X7.20cm/2.83X2.83X2.83in - equipment to increase forearm muscles and grip strength, grip training and training, and increase endurance and explosive power. - , durable, wear-resistant corrosion resistance, tear resistance, high load bearing, not easy to break, is a good thing for fitness exercise. - Small and compact size, easy to carry, can be used and carried when traveling. It can relieve and helps train hands to recover from injury or surgery. - Grip ball is not only suitable for general fitness, but also for enthusiasts, wrestling, ninja, gymnastics, parkour and other extreme sports. - Give it as a the elderly, show them your love and concern, give them a little surprise. Package list: 2 x Balls 2 x Straps 2 x