1943 CPO SHIRT - Buffalo Gray Flannel

The 1943 CPO Shirt from Pike Brothers is a classic flannel shirt inspired by the shirts worn by Chief Petty Officers in the US Navy during World War II. These shirts were developed for work on ships where clothing had to withstand wind, moisture and hard use on deck.

The design follows the pattern from the 1940s, and the construction has changed little since the first CPO shirts were introduced in the 1930s. The roomy fit and two large chest pockets made the shirt practical for work at sea, where the crew needed both mobility and functional pockets.

This version is made from heavy buffalo check flannel , a classic check pattern with strong roots in American workwear and outdoor clothing. The fabric is brushed to provide a soft surface while retaining the durability needed for everyday use.

The shirt is made in Portugal and retains many of the historical details that make the CPO shirt a workwear classic.

About the flannel fabric

Flannel is a cotton fabric that is brushed after weaving to raise the fibers on the surface. This process makes the fabric softer and provides better insulation than regular cotton.

This shirt uses a heavy 310 g/m² cotton flannel , which provides a good balance between warmth and durability. Historically, CPO shirts were made from a wool blend, but modern reproductions often use cotton flannel for better comfort and easier maintenance.

The buffalo check pattern gives the shirt a distinct heritage feel and has long been a symbol of classic American workwear.

Details

• Buffalo Grey Flannel

• 100% cotton

• Fabric weight: 310 g/m²

• Authentic 1940s fit

• Two large chest pockets with flaps

• Cat-eye buttons

• Classic CPO construction

• Inspired by US Navy shirts from 1943

• Made in Portugal

• Article number: P0401-21-0034

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 US Navy. The shirts were developed for work on ships where clothing had to withstand harsh weather while still allowing good mobility.

The heavy flannel, roomy fit and large chest pockets made the shirt a practical garment for life on deck. Today, the CPO shirt is a classic in heritage and workwear-inspired clothing.