I just bought 2 of them. It is for sure a knock off, and does not have that fiber- like look to it, so for sure is not as tough. The pressure relief valve is just a screw. It does have an o-ring behind the nut, so it would vent if you loosened it I guess. The latches are also weaker. I think they are a good buy though, the foam fits my Pelican 1200, and for the sale price it's worth buying them for the foam. It is much deeper than my Pelican 1200, more like the 1300. My Ruger GP 100 just fits, (4.25") but is no good as the front sight and grip are touching the sides of the case. My Shadow fits just fine. Now to figure out what to do with them.