Iron Heart has never been shy to push the weight-envelope with denim, although thus far, it’s typically been with jeans. Their latest shirt, however, is the Overdyed Denim CPO Shirt, and it’s coming in at a very hardy 18oz. And if you’re presently in the middle of a denim-weight arms race with your pals, this shirt will surely put you square in the lead. Heck, it could even have your friends calling for sanctions.

At that weight, this Japanese-made Western-style indigo selvedge shirt is really more of a jacket, so Iron Heart conveniently included some hand pockets at its sides. They also added some oversized branded copper snaps to hold everything in place, and side-seam gussets for added mobility and durability in needed areas. And, similar to throwing an m-60 machine gun on top of a tank turret (like, you know, because why not), the cuffs, collar, and pockets are lined with twill.

A cool $425 over at Selfedge.