Good-quality material: Black laptop backpack is mainly made of polyester fiber, which is not only lightweight, durable, easy to clean, but also waterproof, not afraid of small splashes of water, and can protect your belongings. Capacity:The size of the laptop backpack is (L*W*H*) 30*13*43 cm/11.8*5.1*16.9 inch. (The size of the backpack for manual measurement, the existence of 1-3 cm error is purely normal, has been please prevail in kind received.)The backpack has a separate laptop pocket with a divider for a 14-inch laptop; an anti-theft pocket on the back for important items such as ID cards; two side pockets for umbrellas, smaller water bottles or slim water bottles; and a main pocket for magazines, clothes, etc. Comfortable and Convenient: The shoulder straps of laptop backpack are equipped with built-in cushions, which are soft in texture and the shoulder straps can be adjusted freely to effectively make shoulder more comfortable; Travel backpack has a luggage strap on the