Bronze Times (TM) 15.6 Inch Water Repellent Shockproof Laptop Backpack (Blue) Material: Durable nylon oxford canvas Professional S shape adjustable and breathable thick padded strap offers you amazing carrying comfort Beside the outside big pocket, there are many little zippered compartments in these pockets. Everything you can imagine, even like a little pen, can all get tidy and perfectly organized when going out for a trip, business, or school. ( The laptop compartment up to 15.6 inch laptop or tablet ) The special zipper is invisible under the cloth, which keeps this bag beautiual, secure and anti-theft Dimensions: 12.2'' x 4.75'' x 18.5'' ( L*W*H ); Please be aware that this is the outside size of bag