Dual buckle flap messenger with magnetic closure opens to three main compartments, small zip-pocket and two front pockets with full organizer. Center compartment contains a padded laptop pocket (15" x 10.5" x 2"). Rear compartment expands up to 1.5". Adjustable/detachable shoulder strap.15 x 11.5 x 3.5 (expandable to 5inW)