The Essential Packable Backpack is so versatile! Can be folded to the size of a sandwich bag, it is so small, ultra lightweight. Keep it in your suitcase for an extra bag for your trip or to even throw in your glove compartment for a spur of the moment hike. The backpack has 20-35 Liters of storage space to hold everything you may need on a day out. There is and outer pocket and small inner pocket and 2 side pockets allowing for additional storage. 2 handy outer loops allow items like keys to be secured safely. The bag has adjustable breathable mesh shoulder straps and a top handle to carry. The super strong nylon material is water and tear resistant. It's reinforced stitching and zipper are made to last! Avoid overweight charges, simply unfold from your luggage and use it as a carry on for your excess baggage. Perfect for day trips, vacation, travel, day hikes, school, camping and shopping.