Sensory RollersRoll, bounce, toss, and discover! Each of these three, high quality silicone spheres features a unique design that mesmerizes the eyes and captures the imagination. Hands of all ages reflexively reach, grab, and explore their fascinating, rubbery textures before inevitably rolling them along a table or floor. And when they do Ears perk up. Minds are soothed yet excited. Curiosity and wonder unravel as the charming chimes hidden inside sing beautifully