【USB Charging Hole Design & Wet Bag】This large carry on backpack with a USB charging hole design makes it easier for you to charge your phone or other devices while traveling (The power bank and cable are not included). There is also a full length wet compartment made of high-density waterproof material to isolate any damp items, such as wet towels or clothes,etc.<br/> 【Additional 2 Packing Cubes】This weekend travel backpack comes with 2 pack cubes. Transparent waterproof cube design provides a clear overview of toiletries, keep your belongings neat and organized. A great companion to airplane carry-on bags, weekend backpacks, personal items travel bags and overnight bags.<br/> 【With Trolley Sleeve & Anti-theft Pocket】Exclusive designed for air travel. This 17 inch laptop backpack comes with a luggage strap that can attaches the backpack to the suitcase. A hidden anti-theft zipper pocket on the back can store valuables such as mobile phones or cards to prevent theft. It can be used as spacious college bag,laptop backpack or a daily backpack for a weekend getaway, etc. Provide you with more flexible carryon experience.