The ORIGINAL 4" Sensory Ball, in a four pack of assorted, bright colors. Engage visual and tactile senses with the colorful, textured surface. Encourage growth of fine and gross motor skills, logic, reasoning, and coordination through bouncing, rolling, and tossing. Made with the same high quality features that made it the gold standard, including thick walls and a non-removable inflation/deflation receptacle (basketball pin type) creating a long lasting fun and therapeutic toy.