Denim CPO Shirt
DESCRIPTION: The classic CPO (Chief Petty Officer) Shirt originated almost 100 years ago, and has been widely appreciated ever since. It’s a jacket or a shirt, depending on what you need and what else you wear. Our CPO is an extremely versatile piece in a basic, historical design.
FIT GUIDE: Fitted- cut close to the body with minimal room for layering.
The male model in the photos is 5'11 - 184lbs wearing medium.
SIZE CHART
The male model in most of the photos is 5'11 - 184lbs wearing medium.
FABRIC: 100% WeatherWool Certified Fine Wool in a Denim Weave
FEATURES:
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Signature slot button closures secured with nylon ribbon on cuffs, at the pockets, and front center
- Milspec water-resistant thread throughout
- Cut long for lower back and seat protection when sitting
- Collar is substantial enough that if you fold it up, you will notice the extra warmth around your neck
- Above the cuff is a 4-inch opening, secured by a button, offering good closure but also enabling the cuff to be comfortably folded up the forearm
WeatherWool is always MADE IN USA 100%
VERSATILITY: The CPO is typically a 2nd layer but is also often worn as a 3rd layer or base layer. Our Fabric is comfortable enough that the CPO can be worn directly on your skin, particularly on warmer, rainy days, but also in extreme cold when layering over top and you want the soft wool against your skin to cut the chill or reduce perspiration in mixed temperatures.
Predicting what garments will work for which people is always tricky because there are so many variables. For me (Ralph), the CPO is warm enough for active wear throughout the winter in New Jersey, in temperatures below freezing, with one or two light base layers.
The Denim has been surprisingly weather-resistant and crazy-tough. Make a great, hard-labour work shirt for mixed weather forecasts.
ANECDOTES: Some find the length of the CPO long when worn as a shirt rather than a jacket. Getting the CPO hemmed is simple and should cost no more than getting a pair of pants hemmed.
WeatherWool Advisor Leo Grizzaffi, the outdoor writer, likes to wear his CPO Shirt instead of a sport jacket.
The CPO also comes in our Jacquard-Weave,
SHIPPING: In-stock orders usually ship within 2 business days
OUT OF STOCK ITEMS: If your choice is out of stock, please click NOTIFY, and we’ll get in touch before the next run. Or you can make a SHIP ASAP reservation.
NEXT PRODUCTION RUN: Not Scheduled
Quality Control Steps for the CPO
02 July 2026 --- Cody
Slot Buttons
Slot Buttons are more secure than any other type of button we know. They have two slots through which an ultra-strong strip of nylon ribbon is threaded. The nylon ribbon is very securely sewn to the garment using Mil-Spec Anefil Nylon water-resistant thread. The Slot Button design results in an extremely well-anchored Button.
Slot Buttons
Slot Buttons are more secure than any other type of button we know. They have two slots through which an ultra-strong strip of nylon ribbon is threaded. The nylon ribbon is very securely sewn to the garment using Mil-Spec Anefil Nylon water-resistant thread. The Slot Button design results in an extremely well-anchored Button.
Our Fabric
Our 100% American, 100% Wool Fabrics, made from 100% WeatherWool Certified Fine Wool, are the foundation of our company. Making our own Fabric is time-consuming, difficult and expensive. But for us, there is no other way.
WeatherWool Denim
Denim is a high abrasion—and tear-resistant weave, making it a staple in workwear. Instead of using cotton, we produce our Denim from 100% WeatherWool-certified Wool. You'll find our Denim to be much softer and cozier than traditional cotton denim.
WeatherWool Denim
Denim is a high abrasion—and tear-resistant weave, making it a staple in workwear. Instead of using cotton, we produce our Denim from 100% WeatherWool-certified Wool. You'll find our Denim to be much softer and cozier than traditional cotton denim.
FAQ
Where is it made?
All of our products are 100% made in the USA using 100% American-made wool and materials. We pay American citizens to make all of our garments. See more.
Is WeatherWool in retail stores?
No, it is only available directly through this Website.
What are your garments designed for?
We set out to make the best All-Purpose outerwear possible and we take that "ALL" part seriously. While some items may be better then others for specific needs we like to think we have the perfect garment for anything you do outside regardless if it is in the serving in military, hunting, camping, city, country, work or worship.
Why is it so expensive?
We never cut a single corner at any step. We make our own fabric, from the best wool in the USA. There are over 45 steps in making our fabric alone. We use the highest quality materials made in the USA. We have owner operated customer service on call to serve you and offer free shipping in USA and Canada as well as hassle free returns.
Is WeatherWool Merino Wool?
Not exactly. Merino is great wool and has been very well marketed over the years but pure merino alone is not actually suitable for us.
We select our wool based on a number of characteristics including micron, strength, length, and comfort factor. With the help of our advisor Bob Padula we have determined the perfect recipe for our goals. Thanks to modern equipment we can test all the wool before we buy it and that wool is primarily coming from Rambouillet and Targhee breeds.
How do you clean WeatherWool
Short answer, you almost never need to. It's self cleaning. We've had garments we've worn for 7 years that have never been cleaned other then some rain.
However, things happen. If a lukewarm bath and dry flat doesn't do the trick, you can try wool-cleaner. Our full cleaning page is here.
Can bugs bite through your fabric?
We have not heard of any that can.
What is your customer service policy?
Our customers will be taken care of.
Full Customer Service policy can be found here.
Shipping
No Risk Returns
No-Risk Testing / No-Risk Policy ... We can't have anyone unhappy!.
Free Shipping USA and Canada
We offer free shipping in the USA and Canada.
Call 24/7 Anytime
1 (831) 704- 1776 (831-July 4th 1776)
About us
Founders / Owners
WeatherWool was founded in 2009 by Ralph and Debby DiMeo. Together with their children and a few friends they maintain 100% ownership of the company. Their full story can be read here.
Direct Connection To The Source
We make our own Fabric, starting with raw wool carefully and specifically selected from a small group of ranches in the USA that meet our certification standards. This isn't no stock photo. We're actually out there during shearing sampling wool and sharing stoies and good times with the ranchers and their families.
The Best We Can Figure Out
While most companies decide a price point, and reverse engineer a garment to meet that retail price, WeatherWool does the opposite. We make the best garment we can figure out how to make at every decision we face.Although our garments seem pricey to some our profit margins are below average and you're getting more value for your money and assurance that you're getting some of the best wool in the world.
