Briggs & Riley @Work Medium Backpack (Black) ZIPPER YKK RC zipper hardware for smooth, self-repairing zipper action and ergonomic double zipper pulls FABRIC Ballistic nylon outer fabric resists wear, water, dirt and abrasion CAPACITY 1469.8 cu. in. / 24.1 liters CASE DIMENSIONS 16.8" x 13.5" x 7.5" / 42.7 x 34.3 x 19.0 cm LAPTOP SIZE Up to 15.6" OUTSIDE EXPANDED DEPTH 7.5" / 19.0 cm