It’s like I tend to say these days: When the going gets tough, the tough layer up with Filson. Or something like that. The Pacific Northwest outfitter has a long heritage of making remarkably tough gear for all sorts of inclement weather, from the trail to the slopes to the high seas to, well, hijinks around town. Perhaps you even picked up the iconic Filson Tin Cloth Cruiser Jacket earlier this winter, but here’s another option from one of the best online menswear brands out there: The Filson CPO Wool Jac-Shirt. Stick around to find out why, ya hear?

Yessir, when you want to layer up in one of the best men’s shirt jackets and belly up to the bar to grab a cold beer, Filson delivers. Of course, the Filson CPO Wool Jac-Shirt delivers in plenty of other categories beyond just rugged style (namely, warmth and durability), but it’s nice to have one of the best men’s shirt jackets to check off more than one box. Within, you’ll find all the characteristics of a truly great, stylish men’s shirt jacket, including remarkably warm 16oz. wool.

The Filson CPO Wool Jac-Shirt also boasts a relaxed fit, ideal for layering over a Filson flannel shirt or a Filson thermal when it’s especially brisk out there. Natural horn buttons provide durability, while the oversized front chest flap pockets deliver crucial space for your everyday carry. Of course, the history of the CPO jacket (given to senior Naval officers) makes ideal for all sorts of wet and windy conditions, and the Filson CPO Wool Jac-Shirt insulates even when wet. The next time you need a rugged winter layer to get you out the door wherever your day (or night) takes you, make sure it’s the Filson CPO Wool Jac-Shirt you’re wearing.