Bounce into a world of tactile wonder and motor skill magic with the Edushape Sensory Ball Mega Pack, Pack of 4. This set includes two 7-inch and two 4-inch sensory balls, each featuring a unique nubby texture that is both stimulating and soothing. Perfect for enhancing gross motor skills, these soft, colorful balls encourage crawling, grasping, and coordination while providing a gentle body massage. Ideal for both stimulating play and relaxation, these balls are a must-have for sensory development and strengthening grip and hand-eye coordination.