The Fat Brain Diaper Bag Essentials 4 Piece Baby Sensory Set is a smart sensory learning toy designed for babies aged 0 months and up. Developed by Fat Brain Toys, this unisex set focuses on developing hand-eye coordination skills. Perfect for stimulating young minds, this toy is ideal for keeping babies entertained and engaged while on the go. With its innovative design and emphasis on sensory development, this set is a must-have for parents looking to encourage their baby's growth and development.