SUPERIOR QUALITY: Our Grip Exercise Rings and Finger Resistance Bands are made of top-quality eco-friendly silicone, which is safe and durable, washable, lasts longer, and is not easy to tear. Can be used regularly and feel comfortable when doing hand exercises. 3 LEVELS: The finger stretchers and bands are available in 3 levels. 3 kg/30 lbs for rehabilitation and beginners (children and men and women); 4 kg/40 lbs for relaxation and computer workers (men and women); 5 kg/50 lbs for grip exercises and athletes (men). RECOVERY AND EXERCISE: Hand muscles can be accidentally strained or sprained while working out or using the computer. That's when you need this fitness kit to recover your hands and fingers. This fitness equipment is perfect for rock climbers, athletes in fitness, tennis, baseball, boxing, netball, golf and shooting, as well as musicians such as guitarists, bassists, pianists, violinists and other musicians, for improving finger and hand strength, DESIGNED FOR ALL HAND SIZES: The strength trainer is ergonomically designed for all hand sizes and all ages, perfect for men, women, seniors and teens. You can perform repetitions at home, at work, while walking, in the car or anywhere, anytime, anywhere FULL SET OF HAND EXERCISE TOOLS: 1 x Lake Blue Silicone Finger Puller + 3 x Silicone Grip Rings (Green/Blue/Orange)