I never used a backpack then got this as a gift a few years ago and tried it for travel. It worked great as my personal item - I just stuffed my purse inside for the plane ride. It’s probably not right for serious backpacking, but it is very lightweight and has several compartments. I think the current model is slightly different than the one I got. I used it as a day pack on my Yosemite trip to carry my camera equipment as well as my inflatable neck pillow for the bus rides.
G4Free 40L Lightweight Packable Hiking Backpack, Waterproof Travel Daypack https://a.co/d/gxLpQNn