Kids will love this brightly colored back pack! It is made of a high quality polyester and has adjustable straps that extend from 20 inches to 38.5 inches. The zippered bag measures 11 inches x 15 inches and has 3 additional zippered pockets on the front of the bag. There is even an open pocket on the inside of the bag. It is available in 4 bright colors with dark brown straps.