Birth & up. A ball pit and activity gym all-in-one that grows with your child! With three ways to play, this unique set is sure to be a hit. Infants can use the comfy plush play mat with four adorable sea pals hanging above their head. As they grow and become mobile the pop-up mesh sides will surround them keeping them in a safe zone. Toddlers can sit and play in the sensory stimulating ball pit which features 40 colorful balls that store inside the turtle's head.