OGIMA&reg; Set of 3 Level Resistance Silicone Hand Gripper Ring Strength Training Exerciser 3 RESISTANCE LEVELS - The 3 piece set includes 30lb, 40lb and 50lb round hand grips for training in all three major grip areas. PERFECT SIZE HAND STRENGTHENERS. Sized especially for youths and children plus those who have injuries, stroke sufferers and seniors. Simple squeeze exercise equipment. GREAT FOR YOUTHS & GAMERS - flex and strengthen muscles of the hand, stop cramping up caused by too much computer work. IMPROVE GRIP - Manage heavy pans and open jars easier with our easy to use, portable fitness equipment. Slip in your pocket, use while watching TV or at your desk to alleviate stress. LIFETIME MONEY BACK GUARANTEE -The grippers are made from premium silicone,If the rings rip, tear or break due to use, you can either have them replaced or a full refund 100% guaranteed.