Superior Waterproof CanvasThe messenger bag made from martexin original wax canvas & superior cowhide leather&bronze hardware;Wear-resisting shoulder strap is wide and thick, equipped with a movable mesh shoulder pad with breathable comfortable material to alleviate shoulder fatigue;high grade zipper head, gun colour hardware buckle, magnet buckle open cover, strap adjustable buckle. Satchel Laptop BagWaterproof messenger shoulder bag fit for 15 inches laptops and ipad, tablet, large;SIZE:35cm(L)x27cm(H)x11cm(W)/13.7"(L)x10.8"(H)x4.2"(W),large size for macbook, ipad, unbrella, books, wallet, phone, bottle, keychain, glasses, cards etc. Outer Material: Canvas Inner Material: Polyester Closure: Flap and Zipper Material Composition: High Waterproof density canvas, Soft cotton lining Fit Type: Stretch Shockproof Laptop SleeveMens messenger bag with thickened anti-shock laptop velcro compartment to secure laptops efficiently. StructureLaptop section, main pocket, zipper pocket, front pocket, inner open slots,inner zipper pocket Multipurpose Work, casual day bag, travel bag, outdoor activity bag, school bag, cross body bag or shoulder bag stylish.