Suitable for babies from 0 to 36 months. Padded play mat with waterproof, soft and breathable back, can be removed to use alone, perfect for baby to crawl on. Babies can do stretching exercises by kicking the piano keys to improve flexibility and motor skills. Musical sounds help develop your baby's sense of hearing skills. And it can be used alone. Bright colors and cute design help build baby's cognitive, sensory and visual skills. The whole toy is made of safe material, non-toxic, no harm to your baby. The play mat can be folded and the shelf can be disassembled into pieces, easy to carry for use anywhere. Plastic material.