size Large: height 40CM thickness 30CM width 18CM, suitable for grades 3-6 Small: height 36CM thick 28CM width 17CM, suitable for grades 1-2 Weight: 0.55kg-0.65kg Material: Nylon, high density water repellent fabric, washable Color: gouache, water blue, jujube red, sapphire blue Design A large front pocket, interior compartment, and 2 drink pouches on the sides offer plenty of room for all the necessities.Side water bottle pockets for easy hydration on the go.Spacious main compartments for easy packing and storage with Lunch Bag Bundle. (Recommended for children 3-8 years). Beautiful kids backpack and lunch bag sets for your little one back to preschool, kindergarten, elementary school and casual day trips. Two kids backpacksFront reflective stripes of the kids backpack can glow and shine in the dark to keep kids safe in low light conditions. Your kids will be delightfully surprised when they turn off the lights and see that their backpack is glowing in the dark.Handy ID label inside to make sure it never gets lost.Padded back and adjustable shoulder straps give support and keep you cool.