Exerciser Grip Hand Strengthener Trainer Balls Decompression Toy Feature: Help you focus, relieve stress and train hands, forearms and wrists. Help relieve stress and anxiety., which increases concentration by directing energy to the performance, and keeps the hands quiet.For children and adults. Fanwer New Exercise Balls, have protruding particles can effectively massage the palm of the hand, and reduce the between the and the palm. The middle is ventilated and breathable, and will not produce sultry. people with inflexible need not worry about the grip falling from their hands during use. Two-finger-shaped can effectively the from sliding off. Finger Strengthener are lightweight and you can bring them wherever you want in your bags, suitable for many, such as school, home, office，park, etc. Preventing tension, increasing limberness and alleviating joint pain. Great stress relief toys for adults and kids. occupational distraction for quitting-oking. Grip muscle training for beginner lifters. Specifications: Product : TPR Product color : Blue Product size : about 9 x 4 x 8cm /3 . 54 x 1 . 57 x 3 . 14in Product weight : About 70g Applicable crowd : the elderly , childrenadults Package includes: 1X Decompression