A great fidget and sensory finger exercising tool! Use these colorful 2-1/2" squeezy balls that have built-in finger grips for strengthening fingers and hands, keeping fidgeting fingers busy, getting stress out, warming up fingers before classroom handwriting activities, or using them as an office desk toy to keep your focus at just the right level! These neat sensory balls come in 5 different resistances that build hand, finger, and forearm strength and flexibility for sensory integration. Squeezy Grip Resistance Balls are sold individually or in a 5-piece set that includes one of each resistance.