This is a Witzman Recreation Bag. Convertible backpack, satchel, briefcase. Backpack straps tuck into rear zipper pocket, satchel shoulder strap is removable and adjustable. Brief case handle. Multiple zipper securement pockets and buckle straps to cinch or expand your pack. Padded computer pocket and the entire bag is lined. Durable canvas exterior. Approximately 21x12x8.