Zipper closureMade of ultralight and durable 420D nylonDimensions: 16.9 x 12.2 x 5.5 inches/ 43 x 31 x 14 cm, Weight: 0.3 kg/ 0.66 poundsSpacious backpack features a front pocket for convenient usability,two side pockets with elastics closure secure various loads,roomy main compartment with an unpadded laptop sleeve fits most laptop upto 15.6 inch,,vertical zipper pocket in backsideAdjustable shoulder straps with air mesh padded design of decomposition of the force,reduce the carrying,while still letting out heat and moistureGo back to school, off to work, out to play, or on a short trip with your essentials neatly stowed in this Classic Backpack