CPO Shirt
Description
CPOs are $495 up to size 2XLarge; 3XLarge, $515; 4XLarge, $535
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 upon what you need and what else you wear. Our CPO is an extremely versatile piece in a basic, historical design.
Our CPO is offered in two types of Fabric, with three color choices in each.
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MidWeight Jacquard Fabric: Drab Green; Lynx Pattern; Natural White.
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100% Wool Denim: Charcoal (Black); Indigo; Natural White. Near as I can tell, we are the only source of 100% Wool Denim!
The only Fabric/Color we are NOT making during this Pre-Order period is Drab Green, but some of those are still in stock.
If you are looking for a FullWeight Shirt with handwarmer pockets, please take a look at our ShirtJac, (FullWeight Jacquard Fabrics: Black; Brown; Drab; Lynx Pattern; Natural White).
The CPO is typically a 2nd layer but often a 3rd layer and is sometimes worn as a mid-layer or even a base-layer. Some people will tuck the CPO into their Pants. Our Fabric is comfortable enough that the CPO can be worn over a short-sleeve base-layer or even as a base-layer (as in the video at bottom), particularly on warmer, rainy days.
Predicting what garments will work for which people is always tricky because there are so many variables. For me, the MidWeight CPO is warm enough for active wear throughout the winter in New Jersey, in temperatures below freezing, with one or two light base layers. MidWeight Fabric has a lot of warmth, but it's not designed for sitting in freezing temps. Our Denim CPOs have surprised me with their warmth. Overall, the Denim has been surprisingly weather-resistant and crazy-tough. I think it's a little less weather-resistant than the MidWeight but people who are not used to our wool have been very surprised by the performance.
At left you will find two color palettes, one for MidWeight Fabric and the other for Denim:
- MidWeight Palette shows Drab Green, Lynx Pattern and Natural White
- Denim Palette shows both front and back of the Charcoal, as well as Indigo and Natural White. We'll get a better Denim palette up soon.
WeatherWool Advisor Leo Grizzaffi, the outdoor writer, likes to wear his CPO Shirt instead of a sport jacket.
Here is a review published by Explore Magazine and written by Kevin Callan, the magazine's field editor and a well-known tester of outdoor products. The review was written when we referred to the CPO as a ShirtJac (sorry for confusion!).
And a neat comment sent to us by customer Bruce Carlson: "Received my XL Lynx [CPO Shirt] yesterday. Wore it to work today. 5-6 compliments … everyone wanted to 'touch' it!". People wanting to "touch it" is something we hear often about Lynx Pattern.
Quality Control Steps for the CPO
MidWeight CPO, walking in light rain, temp of 66F/19C, without a base layer ... a day when the MidWeight CPO was better than anything else I can think of ... with no base layer at all!
16 April 2025 --- Ralph
Features
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.
MidWeight WeatherWool
Our MidWeight Fabric is the same as our flagship FullWeight Fabric but 30% lighter, making it ideal for those who engage in more activity—and endurance-based activities or simply need less warmth or weight in the pack. Like our FullWeight, it's produced on a Jacquard loom, which gives the Fabric a three-dimensional weave that helps insulate far better than regular flat-weave wool fabrics
MidWeight WeatherWool
Our MidWeight Fabric is the same as our flagship FullWeight Fabric but 30% lighter, making it ideal for those who engage in more activity—and endurance-based activities or simply need less warmth or weight in the pack. Like our FullWeight, it's produced on a Jacquard loom, which gives the Fabric a three-dimensional weave that helps insulate far better than regular flat-weave wool fabrics
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.
Customer Reviews
I love this piece in denim charcoal so much that I purchased a second in denim indigo. Fits true to size as I’m regularly a XXL tall in Pendleton shirts. I’m a size 49 chest, 275lbs, 6’4 with long arms. Weatherwool’s XXL sizing fits me well in the body width & length, & is long enough for my arms.
The chest pockets fit a longer iPhone Plus, multiple full size handgun magazines & mace. I love the thick & large collar of the CPO shirt. I previously purchased the 3XL Shirt-Jac in a full weight cloth, but found going a size up, made it way too roomy & too long. Plus the thicker full weight cloth made it too bulky to tuck inside my trousers, compared to CPO’s lighter denim cloth which can be easily tucked.
If you are on the fence about what to buy…Shirt-Jac or CPO…the Shirt-Jac can come in a heavier full weight cloth and is more of a coat, than a shirt. I do like how the Shirt-Jac (unlike the CPO shirt), has an interior left side zippered pocket, and two side slits for the hand pockets… to which I use to hide my compact handgun. However, since the CPO shirt lacks those three pockets, it has a more streamlined slimming look around the waist, coupled with the comfort of the softer denim fabric. I find myself grabbing the CPO instead of the Shirt-Jac now that the cool spring weather is upon us. Considering both of these items are offered in different cloth weights and colors, there is a place for both of them in your wardrobe. This CPO is a shirt, while the Shirt-Jac is more of a jacket/coat.
I purchased a drab green CPO shirt in size XL. I am 6'4" and 210 pounds (tall, thin build with long arms). I was hoping the XL would be long enough in the sleeves and the sizing was spot on. The body is a bit generous for me, but more room for layering. The sleeve length is on the mark! Thank you!
I had high expectations for this shirt, and it did not disappoint. It's my new favorite shirt! The wool is soft and extremely comfortable. I wear a XL t-shirt, and XL in Dixxon Flannel. The fit is perfect!
The WeatherWool CPO shirt is my absolute favorite article of clothing I own. It’s comfortable in cold temperatures and comfortable in 60 degree temps as well. It’s soft as can be and I’ve placed another order for a different color CPO too. I’m 6’ tall and 175 pounds and a Medium fits perfectly with a lightweight teeshirt underneath.
I work in the outdoors year round and have always been a big fan of wool for it's warmth and hardiness. My Weather Wool jacket just took things up a couple more notches. I think this is the best quality wool garment I have work yet and it's also stylish compared to my army surplus wool.
