[Compact Design] When you do not use it, the packable backpack takes up almost no space. Store it in any small space and expand into a full-sized backpack as needed. No more taking up space or paying airlines extra carry on fees. [Large Size]This lightweight daypack features one main zip compartment, three front zip pockets, two mesh side pockets, and three inside pockets. The front pocket to store utilities and money pouch for quick and hassle-free access, inner zip pocket for storing small items. The divider in the main compartment can hold a 14" ultralight laptop with spare space. Mesh side pockets with bungees can hold a 500ml water bottle, an umbrella, and a sun-glass, etc. [Durable and Comfortable] The ergonomically contoured airflow foam-pad back design, multi-panel breathable mesh padding provides maximum back support. The unique shoulder strap decompression design with massage mats helps relieve stress on your shoulders. A durable foam-padded top handle makes it a carry-on bag or allows it easily hook to luggage/suitcase handle tube, and the breathable padded shoulder straps don't make you feel uncomfortable, even with a heavy load to carry. [USB Charging Design] With external USB charger port and built-in charging cable inside, it offers you a more convenient way, especially if you out in the city and using your phone to navigate around while charging, so the bulky power bank can be put directly into the bag without having to hold it in your hand. (Power bank is not included.) Headphone Jack: you can listen to your favorite music on the go hands-free. [Suitable for Any Occasion] The backpack is made from highly rip and nylon fabric, provide strengthen and long-lasting performance with minimal weight. Perfect for outdoor recreations, like travel, short hikes, day camping, shopping, walking, cycling, fishing, hunting, skiing, skating, swimming, fitness, etc.