Description: 1. The Backpack Infant Carrier is made of skin-friendly polyester-cotton material, soft and comfortable. 2. It is scientifically designed to perfectly keep your toddler's legs in an ergonomic M-shaped position without affecting your toddler's bone development. 3. It is suitable for infants from 3 to 30 months, with a maximum load of about 20 kg. Specification: Material: polyester cotton Color: gray, green, pink Size: As shown Packing List: 1* Backpack Infant Carrier