It’s a nice bag but I wish that had a 80L :)
Took these on a hundred mile weekend trip down and back on the Wabash trail in western Iowa. Mostly gravel. But! we hit dry dusty on the way down and Rain and muddy on the way back. Bags held up great. I have an Ibera rack on my bike and they fit great. The thing I liked was no movement during the trip. Everything stayed dry and still. I had it loaded with about 21 pounds of gear and really couldn't feel it. Enough for two. Also there are 2 tie down straps on the top to tie down more gear. (sleeping pads). Nothing ever moved. They are made from the same type of material my sea bag is made from so I liked that. You wont be sorry, they are worth the money. Can't wait for the next trip.
The bags have a lot of room. And will fit most bike racks. If you have a large diameter tubes for your rack the bags will not clip on the rack. That was the only drawback with them.
I got them mounted on my mountain bike as soon as I got it. Multiple pockets and very roomy. Great to place in extra clothes and whatever I need to ride to the pool to swim. If you are going camping and a bike tour, then I would something huge. But commute for school, shopping mall or the where ever you need to pick up things this it. Stylish.
Worked great, I cut along the stitch line on both sides to separate the bikes for uses on my pannier racks and it worked out great.
They seem to be pretty resistant to water although I have not been caught in a full on downpour yet but if they are not, I will just use waterproof bags or even black trash bags inside of these to keep things super dry.