SKmoon Hand Grip Silicone Ring Strength Training Hand Strengtheners for Children, Computer Users, Gamers & Stress Relief plus Rehabilitation of Muscles after Stroke Set of 3 3 RESISTANCE LEVELS -Light, Medium and Heavy resistances from 20lb to 50lbs which can be shared with your families and friends. Excellent exercise equipment for men and women, young and the elderly with soft and colorful grips. It makes a great Valentine's Day gift. Ergonomically Designed to Fit Small to Large Hand Sizes. Perfect for Men, Women, Seniors and Teens.Especially suitable for the office person and the hand-harm or the seniors during the rehabilitation . BUILD STRENGTH: Improve hand, grip and finger strength through easy squeezing and hand therapy movements.recovery training. Prevents stiffness,increases flexibility,relieves joint pain,reduces stress and eases muscle tension, Promote blood cycle. Nothing to break - elegant design with finger indentations provides secure grip, adjusts to fit small or large hands, gives you the best pressure distributions while you squeeze the grips. Light and portable - fits your purse or even a pocket. Ideal size for easy travel, so you can workout while you are at work, gym and home. Lifetime guarantee - if you're not 100% satisfied with your hand grippers or if it doesn't hold up for you forever, we'll replace it free of charge - no questions asked.