Believe in the Run is a runner-focused community which independently tests product for runners. They tell it like it is. And if they don't like it, they probably wouldn't review. Reviews are legit.
And this is theirs of Mudroom Backpacks.
https://believeintherun.com/gear-reviews/mudroom-backpacks-review/
Trail Runner Magazine and runner-coach-writer Cory Smith trail tested Mudroom Backpacks and wrote about it in the electronic version of Trail Runner Magazine. Here is the link:
https://trailrunnermag.com/gear/trail-tested-quartable-18l-pack.html