Filson Introduces The CPO Wool Jac-Shirt, A Wool Overshirt With Naval Heritage

I’m a huge fan of Filson’s wool shirts for men, including timeless frontier staples like the Mackinaw Wool Cruiser Jacket and the Mackinaw Wool Blazer.

I’m going to add another heirloom-quality woolen shirt to my Filson wish list: The new Filson CPO Wool Jac-Shirt, inspired by the heavy wool overshirts issued to Naval Petty Officers.

Available in navy or forest green, the Filson CPO Wool Jac-Shirt is engineered with 100% heavy wool. It’s designed for heavy seas and ruthless weather – the wool construction naturally wicks moisture and, unlike cotton or other synthetic materials, keeps you warm even when wet.

According to Filson, the U.S. Navy issued similar wool overshirts to senior enlisted men starting in the 1930s. Seattle-based Filson has been making similar shirts for service in the wet and cold Pacific Northwest since the 1970s.

In recent years, Filson outwear has been popularized via shows like Yellowstone. Given the nautical hertiage of the CPO Wool Jac-Shirt, it’d be awesome to see a shirt like this in an old school naval or fishing show. We deserve a modern interpretation of Jules Verne’s Twenty Thousand Leagues Under the Seas where Captain Nemo is wearing this exact shirt and battling it out with a barbaric sea monster on the deck of the Nautilus.

Filson CPO Wool Jac-Shirt

Built with 16-oz. 100% wool

Natural horn buttons for front and adjustable-cuff closures

Spread collar

Center-back box pleat

Insulates even when wet


Brandon Wenerd avatar
BroBible's publisher and a founding partner, circa 2009. Brandon is based in Los Angeles, where he oversees BroBible's partnership team and other business development activities. He still loves to write and create content, including subjects related to internet culture, food, live music, Phish, the Grateful Dead, Philly sports, and adventures of all kinds. Email: