Hedstrom Sensory Twistz (20) 1-1/2" foam balls link together and separate to create different designs as it twists, turns and swivels Promotes critical thinking and problem solving and makes a great first STEM toy Durable foam balls are brightly colored and patterend but have a smooth, uniform texture for both visual and tactile sensory appeal and exploration Makes a good addition to sensory friendly rooms and also works as a fidget toy. Helps develop fine motor skills. Recommended for 3+ years. BPA, Latex and Phthalate free