15 inches in the interior of bag, 11 inches in width inside bag. , lots of space & room for a laptop with a laptop protector. Description It's all in the details. Oh so smart, baggallini thought of everything when designing this quilted nylon backpack - so you don't have to! • Adjustable padded backpack straps, web handle, luggage sleeve, quick access phone pocket, exterior zipper pocket • Lined interior, main compartment with zipper closure, 13" padded laptop pocket, interior zipper pocket, interior slip pocket, two card slots • Measures approximately 15.5 "H x 5.2"W x 11.2"L with a 2.5" handle drop and 30.5" backpack straps; weighs 0.95-1b • Body/lining 100% polyester • Imported Baggallini Women's Quilted Backpack NWT in silver-grey, with padded laptop pocket for up to 13" laptop. Other features include adjustable straps, RFID protected card slots, lightweight, water-resistant, luggage sleeve, washable (wipe with damp cloth or machine wash), Designed with sustainability in mind, this bag features a lining and zippers that are made from recycled water bottles. Exterior dimensions: 11.2" W x 15.5" H x 5.2" D. Weighs 0.95 Ibs This is an awesome backpack purse and has limited stock selling for $99.95 online.