Wrapables Dinosaur Backpack for Toddlers Nylon Ideal for toddlers 4 years and under (preschool to kindergarten). Adjustable straps fit most sizes. Padded for extra comfort. Dimensions: 8L x 4.5W x 10H inches. Tail about 6.5 inches long. Material: Nylon, Canvas. Safe for Children and tested for lead safety. In compliance with CPSIA (Consumer Product Safety Improvement Act of 2008), and California Proposition 65, Alameda Superior Court, Case No. RG 09-459448Total Lead (Pb).