-
SizingGarment Specifications
Size Guide
Garment Size Chart Size Chest Neck Shoulder Sleeve* Length** 36 – XS 40 15¾ 17¼ 33 28⅛ 38 – S 42 16¼ 18 33¾ 28⅞ 40 – M 44 16¾ 18¾ 34½ 29⅝ 42 – L 46 17¼ 19½ 35½ 30⅜ 44 – XL 49 17¾ 20½ 36½ 31⅛ 46 – XXL 52 18¼ 21½ 37⅛ 32⅛ Sleeve length is measured from center back neck.
Length is measured from center back neck.
How to Measure
-
1
Chest
Button up the shirt and lay it flat on a hard surface. Measure across the chest area of the shirt about an inch down from the underarm seam, and double that for the full chest measurement.
-
2
Neck
Spread out and flatten the collar, and measure the circumference from the center of the top button to the edge of the buttonhole.
-
3
Shoulder
Measure straight across the back of the shirt, from one shoulder seam to the other.
-
4
Sleeve Length
Measure from the top of the shoulder seam to the end of the cuff. Next, measure from the center back of the neck seam to the shoulder seam. Add these two values to get your sleeve measurements.
-
5
Length
Measure straight down the back of the shirt, from the center of the neck seam to the bottom of the shirt’s hem.
Body Size Chart Size Chest (in) Arm (in) XS 36 32½ S 38 33¼ M 40 34 L 42 35 XL 44 36 XXL 46 36⅝ How to Measure
-
1
Chest
Measure around the fullest part of your chest, keeping the tape parallel to the floor. The tape should be snug, but not too tight.
-
2
Arm
With your arm bent slightly, measure from the base of the center back of your neck, along your shoulder, then over your elbow to your wrist bone.
-
1
Fit
- Fitted at the chest with a straighter fit through the body.
- Model is 6'1", wearing a Medium. View Size Guide
- Customers say this fits: True to size
- Runs small
- Runs slightly small
- True to size
- Runs slightly large
- Runs large
Description
Initially introduced in the 1930s as a dependable layer for Chief Petty Officers, The CPO Shirt has since become a lauded staple for hunters, hikers, and anyone else in need of some rugged utility. While we’ve applied a few thoughtful updates (like a tailored silhouette and a more durable wool blend), the function-first spirit of the CPO shirt that made it such an asset in the field remains. Pair it with a tee or wear it under a jacket; The CPO is ready for duty in every season.
Material
The CPO Shirt is crafted from a soft yet durable wool blend with a balanced weight for cross-season wear. Finished with organic cotton interior panels for extra comfort and vintage-inspired chest pockets with scalloped flaps.
Specifications
- 7-oz. 81% wool, 19% recycled polyester.
- 6-oz. 100% organic cotton twill detailing at interior back yoke, under sleeve cuffs, front placket, and pocket flaps.
- Signature California collar.
- Two chest pockets with button-through flaps.
- Adjustable button cuffs.
- Double needle felled construction.
- Dry clean only.
- Made in China.
Garment Weight
Toss on over another shirt or make it your first layer on a colder day.
- Light
- Light-medium
- Medium
- Medium-heavy
- Heavy
Limited
This product is part of a small batch manufacturing run that may use exclusive materials like dead stock fabrics. The product is limited in quantity and may never be in stock again. Limited products are available for immediate shipping.


As far as natural fibers go, wool leads the flock in terms of performance features (temperature regulation, moisture management, etc.), but it also boasts a ton of environmental benefits, including impressive garment longevity, recyclability, and low-impact upkeep.
