JANSPORT ECU!!!! plaid on the outside and padded shoulder strap. This is like the trapper keeper of all school bags. The front flap has a zippered pocket and opens to a zippered pocket. Then right behind the first pocket, there is a duel zippered pocket. On the left, a water bottle holder. Then behind those pockets is the main compartment. Adjustable strap. Approximate measurements: 15 X 15 X 5 inches. This item is cross listed