Blancho [New Generation] Multipurpose Outdoor Backpack / School Bag -Red Overall Dimensions: 20.5 inch H x 12.5 inch L x 6 inch W. Stores textbooks, binder, spiral notebooks, calculator, cell phone, and more. At both side of external pockets feature elasticized mesh, which expands to secure various size water bottles. S-curve shoulder straps with two main compartments for versatile storage This versatile backpack is made for convenience and functionality