I got this to hold my giant hiking backpack on flights on my two week trip Scandinavia trip. The bag is plenty big enough to hold my backpack. On my way home I ended up putting another small bag in there along with my backpack, with room to spare. The bag is difficult to carry, as its heavy and doesn't have an adequate strap, but I just waited till I checked in to put my stuff in the bag, and then I took my stuff out when I picked it up at baggage claim. It served its purpose. It stayed in good shape through 6 flights. It doesn't pack up super small, but it was small enough for me. I'll use it the next time I need to cover up my hiking backpack for a flight.