One of the best bags i've ever used - Mystery Ranch In and Out 22 Backpack

I travel a lot using carry on only for anywhere from 3 day to month-long trips. I use a large backpack as my overhead luggage and carry my podcasting gear as my personal item. This bag is perfect to bring along clipped to the outside of my big backpack, then deploy when I get where I'm going to use for every day carry. When home, this has now replaced an old osprey bag as my go to everyday carry as well when I'm out in town. I owned the previous, smaller version of this as well and this is a huge upgrade. I've never used a drawstring bag before and I actually find I like it a little better than the zipper, the size is better, and the side waterbottle pocket is still tight but actually usable for my Nalgene. This bag is built like a freaking tank unlike most compressible bags and I look forward to using it for basically the rest of my life