BinderBag™ Messenger. A bit more room to carry the essentials. Features include a 2" wide padded non-slip strap, grab handle, an expanding external zip pocket, internal pencil pocket, and an internal mesh zip pocket. This bag is big enough for a school year's worth of notes from all your classes. Designed to fit most 3-ring binders from 2 to 4 inches. Binder not included. Dimensions: 13" x 14" x 3.5"