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Description: Comprehensive protection: this computer backpack adopts a special proportion of PC & ABS hard shell, the outer layer of high-density waterproof Oxford cloth, the inner layer of shock-absorbing RB wave point cotton and tear resistant polyester, and is equipped with brand waterproof and wear-resistant coating double zipper. Triple anti-theft: the unique double-layer TSA intelligent customs lock design protects the safety of the items in the hard shell backpack. TSA laptop backpack has a hidden anti-theft pocket on the back to protect your valuables from thieves Multi compartment design: it can accommodate 17.5-inch laptop, and its main compartment can also place books, documents, chargers, keys, daily belongings, etc. A separate shock-absorbing padded computer compartment is suitable for most laptops up to 17.3 inches Comfortable and breathable: adjustable S-shaped padded shoulder strap and non slip chest strap can relieve shoulder pressure. 3D honeycomb breathable back cushion has good heat dissipation performance to keep your back dry and cool in summer USB intelligent design: external USB charging port, with protective cover and built-in charging cable. This smart backpack is very suitable for you to charge your mobile phone while walking. Specification: Size: 47 x 33 x 9cm/18.5 x 12.9 x 3.54inch Package Includes: 1 Piece Computer bag 5 Pieces stickers