Buzz Rickson's - C.P.O Wool Shirt Navy Department

Where it's made: Made in Japan
What it's made from: 100% wool with cotton-thread construction
Fit description: Mid-weight, soft wool flannel with a classic, comfortable CPO fit

The CPO (Chief Petty Officer) shirt traces its origins back to the 1930s U.S. Navy, where it was issued as a warm, durable, and practical overshirt for sailors working on deck. Buzz Rickson’s — renowned for their meticulous, historically accurate reproductions — recreates this icon using mid-weight wool flannel that provides warmth without bulk. The single chest pocket, clean silhouette, and cotton-thread construction all stay true to the original naval specification, making it both authentic and highly wearable today.Jonas is 183 cm, 75 kg and wears size 40.