Make every day a gym day with the 7-in-1 Grow with Baby Sensory Gym. We’ve got your little one covered from tummy time to ball-pit play with activities to help build their muscles, minds, and senses. Built-in features are designed to nurture each developmental stage from birth to toddler, and the included guide explains how to use each play zone and accessory to support your baby’s growth. Encourage little ones to explore the sights, sounds, and textures of the mat, musical xylophone, and sensory toys. Create a soft, enclosed play space by folding up the sides of the mat. Add 20 balls to create a playful ball pit!.