MATEIN Carry on Backpack, XL Travel Backpack Expandable Airplane Approved Weekender, Unisex Bag, Water Resistant Lightweight Daypack for Flight 40L, Black FEATURES/ACCENTS: This XL travel backpack w/ expandable feature offers you more packing capacity. 40L storage can easily hold packing cubes, make-up bag, outfits, camera bag and gear, etc. This versatile luggage backpack also meets most airline carry-on requirements. The carry on backpack is designed w/ hideaway padded shoulder straps which can be easily stored away in zippered back panel, transforming this vacation backpack from carry-on duffel to briefcase style and provide you a more flexible carrying experience. A luggage strap on the back is designed to fit on luggage/suitcase, for easier carry on international travel or cruise. The luggage backpack is light to carry due to its adjustable shoulder straps, comfortable air-mesh ventilated back panel. 2 padded grab handles are set on the top and the side of the travel backpack, making it easily to take the bag from an overhead bin. Front compartment is for little gear such as phone, earphone. The large inside pocket has internal compression elastic straps. The padded straps include a sternum strap that can be adjusted upward or downward, set to go across your chest, relieving the weight from your shoulder. 4 external compression straps keep contents from sloshing around and can get an inch or 2 more of vertical space also reduced stress on the zippers.