Description: The ergonomically designed padded shoulder straps of the Toddler Backpack Carrier evenly distribute the toddler's weight for extra comfort and avoid long-term damage to the spine due to unreasonable pressure. The C-shaped design fits the shape of the toddler's vertebrae, keeping his legs M-shaped, and making him comfortable. Specification: Material: cotton, mesh Color: gray, green, pink Size: see picture Packing List: 1*Adjustable baby carrier