Features1Convex Point: Hand exerciser adopted convex points design, effective prevent slip and give your palm a comfortable massaging experience. 2Comfortable Grip: 4 finger holes is more in line with the hand engineering design, make this hand grip exerciser is comfortable to hold. 3Multifunction: Finger exerciser can improve hand spasms, arthritis and stroke, suitable for phone and computer enthusiasts, or those with ADHD. 4Small Size: Finger training exerciser with a pocket size, easy to carry and store, you can use it when you take a bus, watch TV, or in the office, etc. 5Water Washable: Hand grip strengthener made of TPR material, soft and comfortable, can be washed by water, easy and convenient to clean.SpecificationItem Type: Finger Flexibility ExerciserMaterial: TPRSize: Approx. 9.5 x 9.5 x 1.9cm / 3.74 x 3.74 x 0.75in Efficiency: Grip strength trainer for adults, improve hand spasms, arthritis and stroke, can be used for phone and computer enthusiasts, and also suitable for those with ADHD.Applicable Symptoms: Powerful men trainingGrip Strength: 27kg / 60lbPackage List1 x Finger Flexibility Exerciser