Features different tactile patterns and textures Can help develop balance, coordination and gross motor skills Balance, step and hop on them Durable and strong vinyl Sensory Stonez are great for helping children with balance, coordination and gross motor skills development. Each colorful assortment includes three Sensory Stonez and each has a different tactile feature that will keep kids engaged and entertained. Hedstrom Sensory Stonez are safe for indoor and outdoor play on solid surfaces. SHIPPING NOTE: this item ships in the packaging shown without an over box, item will be visible upon delivery.