3 Pieces for Replacement: you will receive 3 pieces of hand exercise balls in yellow color with finger loop design; Squeezing them builds strength and endurance in the hands, fingers, wrists, and forearms, quite true for those with disorder, autism, or high anxiety Finger Separation Design: the finger separation design can assist the finger to be placed in the proper position of the pressure ball, suitable for different fingers to fit. so you can use this finger strengthener for training with confidence Hand Recovery Promotion: this sort of hand squeeze exerciser promote hand dexterity and recovery, and you can use it for your hands, fingers, wrists, and forearms to perform a number of targeted exercises to increase strength and flexibility, coordination, reduce painfulness and stiffness Quality Material Selection: made of quality PU material, our finger stress ball in oval shape is more comfortable to hold, tasteless and resilient; The hand grip enhancer is suitable for adults and even kids, and it has a non slip surface and does not stick to hands Play It Now: the hand grip exerciser ball can be applied as you want; Finger strengthening balls are lightweight and you can put them into your bag, making them suitable for multiple occasions such as school, home, office and study