MAXSOINS Hand Therapy KitSize: diameter of about 11cm， Color: blue， Hardness: 30LB (slightly soft).Ergonomically Designed to Fit Small to Large Hand Sizes. Perfect for Men， Women， Seniors and TeensIdeal for Athletes and Sports Enthusiasts Who Want to Increase Their Hand， Wrist， Forearem and Finger Strength for Rock Climbing， Shooting， Bodybuilding， Golf， Tennis etc100% edible grade silicone， non-discriminatory and children pacifiers， and good elasticity no smell.Great Hand Strengthener for Musicians Including Drummers as well as Guitar， Piano and Violin PlayersUse MAXSOINS Hand Therapy Exercise Kit to keep your fingers， hands and forearms supple and strong with simple daily exercises. This hand therapy kit includes three color-coded balls of varying resistance (soft， medium and firm) for your specific needs and personalized progression. A full-color exercise guide includes easy illustrations on how to use the balls to improve strength， prevent stiffness， relieve joint pain and increase flexibility.Get a Grip!With three different color-coded therapy balls in varying resistances， these Hand Therapy Exercise Balls will provide your fingers， hands and forearms all the rehabilitation and strengthening you'll ever need! A Full color， illustrated exercise guide is also included to maximize your exercise.Features and SpecificationsKeeps fingers， hands and forearms strongImproves strength， prevents stiffness and relieves joint painThree color-coded balls of varying resistance (soft， medium and firm)Easy to customize to individual needs and progressionIncludes full-color exercise guide with easy-to-follow illustrationsHand Exercisers are specially formulated polymer-based. The exercisers available in progressive levels of resistance in three translucent colors. They're used for hand， finger and forearm strengthening， as well as hot and cold therapy. Progressive resistance in different levels of compression allow each exercise to be geared to the patient. Use the standard size hand exerciser for smaller hands. The Extra Large size was designed for arthritis victims and people with larger hands who are undergiong physical therapy or strength training.