Solid panniers for commuting or travel
These bags are great - they expand as needed and the compression strap holds things in place when I don't need the full volume. I had to add a piece of cardboard so the rivets on the back don't scratch up whatever I put in the bag. No big deal. The mounting to my rack makes me a little concerned. They work great now, but they're just plastic so over a couple years of use I'm worried they'll snap. Only time will tell.