1943 CPO SHIRT - Tijuana Brown

The 1943 CPO Shirt from Pike Brothers is a classic workwear shirt inspired by the shirts worn by Chief Petty Officers in the US Navy during World War II. The shirt was developed for work on ships where clothing had to withstand wind, salt water and harsh conditions on deck.

Over the decades, the CPO shirt has become a classic in maritime workwear. The roomy fit and two large chest pockets provide good mobility and convenient storage, making it ideal for work at sea.

This version is made from Tijuana Brown flannel , a soft cotton fabric with a distinct structure. The fabric is brushed after weaving, which gives it a soft surface and makes the shirt comfortable to wear both on its own and as a layer over a t-shirt.

The shirt is made in Portugal and follows the authentic fit from the 1940s.

About the flannel fabric

The shirt is made from 152 g/m² cotton flannel , woven exclusively for Pike Brothers in Portugal. After weaving, the fabric is brushed to lift the fibers to the surface. This process gives flannel its characteristic soft feel and a warmer surface than regular cotton.

Flannel has long been used in work shirts because the material combines durability with comfort. The brushed surface helps retain heat while remaining breathable and comfortable against the skin.

The relatively light flannel quality means that the shirt works well both as a classic shirt and as a light overshirt in the transitional seasons.

Details

• Tijuana Brown flannel

• 100% cotton

• Fabric weight: 152 g/m²

• Authentic 1940s fit

• Two chest pockets with flap

• Classic CPO construction

• Pre-washed fabric

• Made in Portugal

• Article number: P0401-25-0023

Size chart (cm)

Measurements are taken when the shirt is lying flat. Slight variations may occur.

The story behind the CPO shirt

CPO stands for Chief Petty Officer , a rank in the United States Navy. The shirt was originally developed in the 1930s for work on deck where clothing had to be warm, durable, and practical in inclement weather. Over time, both materials and details have been adjusted, but the basic design has changed little.

Today, the CPO shirt is considered a classic in heritage and workwear-inspired clothing, and it is used both as a shirt and as a light outerwear.