100% LIFETIME WARRANTY LIFETIME COVERAGE: We will provide our worry-free life-time coverage service, and friendly 24-hour service support. Take responsible for any quality-related issues of the LCKPENG large travel backpack. THIS ITEM IS NOT INTENDED FOR USE BY CHILDREN 12 AND UNDER | COMFY & STURDY: Comfortable airflow back design with thick but soft multi-panel ventilated padding, gives you maximum back support. Breathable and adjustable shoulder straps relieve the stress of shoulder. The top handle of the 17 inch large travel backpack is padded. The large laptop backpack for men is tested and designed for a very long time. | USB PORT DESIGN: With built in USB charger outside and built in charging cable inside,this usb backpack for mens and women offers you a more convenient way to charge your phone while walking.Please note that the USB backpack for men itself does not supply power, and the USB charging port only provides easy charging. | FUNCTIONAL&SAFE: LCKPENG Travel laptop backpack for men women has a luggage strap that allows the large laptop backpack fit on luggage/suitcase, slide over the luggage upright handle tube for easier carrying. There is a hidden anti-theft pocket on the back, which can protect your valuables from thieves. Suitable for international air travel and one-day tour, it is a travel gift for men. | TSA APPROVED TRAVEL BACKPACKS: TSA friendly backpack for men is designed for airplane flight travel. It is easy to open 90-180 degrees at the checkpoint and quickly at the airport security check to ensure easy air travel and make this large travel backpack easier to pass the airport security check. Occasional international travel, night backpacking camping, hiking backpacks and high-capacity USB rechargeable backpacks | LOTS OF STORAGE SPACE&POCKETS: LCKPENG 17.3 Inch Laptop backpack for men has one separate laptop compartment that can hold 17 Inch,15 Inch and 13 Inch Laptop. Large travel backpack for men and women includes a spacious packing box can meet daily needs, high-tech electronic accessories. Front compartment provides many pockets,makes your item organized and easier to find | IDEAL PRESENT FOR STUDENT: The large laptop backpack for men has a lot storage space for 17.3 inch laptop, pencil bags, books and folders. The extra large college backpack for student has been through gravity test and can bear heavy weight. So it is a perfect student’s backpack for women, men. The shoulder straps of the laptop backpack is padded and its bottom is thickened, which can protect the computer very well | DURABLE MATERIAL & SOLID: LCKPENG 17.3 inch large backpack for men made of waterproof and durable polyester fabric with metal zipper. Ensure safe and sustainable use every day and weekend. Large laptop backpacks designed. Reminder: Please do not expose the large laptop backpack to heavy rain for a long time without any rain cover | LARGE BACKPACK WITH LAPTOP COMPARTMENT: Large travel backpack has 17.3 inch computer compartment. It will be very convenient to carry a laptop. The seperated compartment can prevent the laptops from scratching. There is a Velcro fixed position. LCKPENG laptop backpack for men could be used as a carry on backpack for travel, internation airport, business trip