Step-N-Stones are unique air-filled domes that audibly release air and become flat when stepped or pushed upon. When the foot or hand is lifted, the Stone instantly recovers its shape. The set, as with many of our other products, employs color and number elements for implementation of cognitive activities. Use Step-N-Stones as a lead-up balance activity, a sequencing challenge, a math exercise, or a way to safety cross a mystical river. Each Stone is roto-molded in one piece, and is so durable it should never need replacement. Latex free. Set included six Step-N-Stones numbered 1-6, one each; red, yellow, blue, green, orange and violet.