So for references, here you go:
Hubby (Active L.E.O.)-M, 6'1", 250pds, got XL
Me (Armed Security)- F, 5'4", 179pds, got M

We have been wearing them for the passed couple of days, in weather of 55° and lower @ 15+ MPH winds, and we are so pleased with its performance. The ordering was easy and simple and it came in right on time. We had an unexpected cold front come in and we were warm and comfortable, yet mobile to where we didn't feel restricted to our gear. We highly recommend it and appreciate the one who made it. Finally! Someone who gets it and created a product that we now have a confidence in, instead of blowing money on finding the "right" fall/winter attire so we can stay professional but comfortable. A wonderful investment that you won't regret.

I waited to write a review until I tested this out in different conditions. I have been wearing this for about a month now on patrol and it’s impressive. I live in upstate NY. I have worked in snow storms and overnights with wind chill up to -8 degrees F since wearing this thermal, and the difference is phenomenal. I personally was okay with the thermal and a long sleeve uniform shirt under my vest, no jacket, until the temps recently dropped below 20 F. Even now that it’s much colder with wind, I am okay adding a light jacket and still staying comfortable outside. I have not needed the bulky outer coat that I hate.

The material for the sleeves/shoulder area really takes the edge off. Yes, the sleeves are thicker but are comfortable and not restrictive. The seal at the wrists is nice and secure, no air will make it up the sleeves.

I waited to purchase this because of the price and being unsure if it would live up to the hype, but I am very glad I gave it a shot. I hate being cold. I will buy more. Thanks for a great product.

This is absolutely the best base layer I have ever owned.

I had been wearing this shirt as a base for a while and was thoroughly impressed with its day to day comfort in the basic cold weather, between -10 and -25 degrees Celsius or so, which of course was in and out of the vehicle, with relatively short exposure times outdoors during my shifts. However, on one occasion, its performance particularly blew me away. I was wearing this shirt as a base thermal with only a light fleece overtop, and then my SBA, during a colder night shift at around -37 degrees Celsius (almost -35 F). A coworker was operating a snowmobile on a stranded UTV call patrol, and grew too cold to continue, but we were still 15 minutes from home base. I volunteered to give it a try, wrapping an extra coverage around my neck area, fully expecting it would last not even a minute and there’d be no way to continue. What followed was me being able to operate for about half the distance, stopping once to warm up briefly (mainly for my legs), and then continue the rest of the way. I was absolutely shocked at how well this piece performed with what was such an extreme cold without even factoring in the wind chill that would have been produced by operating the snowmobile in those conditions. When we got back, my partner felt my outside layer, which obviously was cold to touch, but when I told him I was a bit chilly, but not cold feeling underneath on my upper body area, he was shocked. I’m not sure how they have managed to get such cold performance out of such a pliable and non-restrictive material, but they made a believer out of me on that cold night patrol. Keep up the great work 221B!

This shirt is better than even advertised. Even though I’m in Florida, nights shift can be cold. This shirt is not bulky, and is WARM. I bought another after the success of the first.

Love the base layer as far as comfort goes. Fits as described. I don't believe its quite as warm as described. My first day wearing was 10 degrees above and I still feel like I need an additional layer. The shipping was very slow almost a month before getting here. I did speak to helpful lady named Richelle who was helpful from a customer service aspect.

Ordered two of these shirts after being given the recommendation by a coworker. Took me exactly a month to get my order while waiting to receive my order I reached out to customer service multiple times with no response. Once I got my order I only received one shirt. Called customer service said nice again with no response. Called the owners number. He answered and was very apologetic about the issue and said he would let the warehouse know immediately.

Now the shirt is well worth the price. It keeps me warm on cold nights. Can’t wait to receive my second one!

I work for a midwestern department where we regularly see sub-zero temperatures with windchill plunging it to the -40s (F). Normally, my layers are 3.0 base layer, uniform shirt, coat, and external carrier. I absolutely despise wearing a coat under my vest.

After some brief shipping issues worked out with some fantastic customer service skills by 221B, I received the base layers a day before we had our deep freeze and figured I would REALLY put the base layer to the test. I took the coat out of my layers and worked patrol with just the base layer, uniform shirt, and external carrier.

On getting my patrol unit ready, I noticed I was actually starting to break a bit of sweat with it being between -10 and 0 degrees (no wind) and besides some minor chills, it really felt no different than being outside on a cool summer night to me (60-70 degree comparison). I worked like this for approximately 3-4 hours at which point windchill dropped the temperature to in between -30 and -25 degrees with a cutting wind. The wind cut through the base layer like a knife but credit where its due, this is the type of cutting, cold wind that would cut through ANY base layer. Even with this wind, the cold I experienced was more of an uncomfortable cold and not an unbearable, "I need to put a coat on NOW" cold. After I put just a windbreaker on, I had no issues with the cold. With my 3.0's, I had to wear an actual coat and not a windbreaker in this chilling cold wind.

The following nights I worked in -10 to 0 degree weather and even with light winds (that were not cutting) taking windchill to the -15 range, I did not need a coat. So I think I have definitely pushed and tested the limits in the most extreme way of this base layer.

Overall, these will be my new extreme weather base layers as just in the brief amount of time I've used them they have proven themselves to be extremely worthwhile in the extreme cold we have here. I will be recommending the products to any new trainees we hiring on and have been directing shift-mates to the products as the majority of them also despise wearing coats.

Although the product fit well the shipping was awful. It almost month to receive my item which I was ok with. However, I had to reach out to them multiple times to get any information about it. I was told they were changing warehouses but could not give me any time frame on when it would ship. The owner finally reached out to me and only then did I get a tracking number and date of delivery. Other than that the shirt is great. I will buy from them again in the hopes they have fixed there shipping snafu.

I used to bundle up before I wore this shirt. Now I only wear this shirt and I stay warm in all the weather

I was reluctant to purchase, but with the Police Discount the price was comparable to other brands. I'm a cop in Michigan and the weather gets cold. I tried this shirt yesterday with sub 20's and I was impressed. I didn't need a jacket as another layer. I tried the Under Armor Cold weather 4.0, and this shirt is much warmer. I paired this with the 221b short sleeve base layer and I was comfortable all day, even while writing reports. Must buy for anyone in cold climate duty!

Worn this in single digit temperatures as a base under my duty shirt. I don’t wear a jacket only my Carrier and this shirt keeps me dry and warm. My only complaint is the cuffs are to tight and become uncomfortable after wearing it for a shift.

well I waited a bit and finally came in, I didn't know what to expect and I was surprised, I only wish I had ordered two, great shirt and the gloves aren't bad either, I'll be a return customer

I was gifted this shirt, along with the Equinoxx K-2 Dyna-thermal bottoms for a Christmas gift. Working in LE in Wyoming can be miserable at times, especially during winter. During the earlier winter, these layers worked by themselves and are FANTASTIC at blocking the horrid Wyoming wind!

Since it started getting double digits in the negative temperatures, I’ve began doubling up and using underarmour coldgear under the shirt and pants and it seems to keep the cold at bay without making me too hot inside of my vehicle.

I would highly recommend this to anyone working outdoors, especially in LE to eliminate the bulkiness of a coat. I’ve recommended this to all of my coworkers! Little on the pricey side, but seems like the products will pay for themselves in the rough Wyoming winter months!

Could not be happier with how well it performs!

Up North the temps are brutal, with this I use less layers and for some reason still get hot. Great product willing to buying more soon.

Outstanding warm in single degit weather.

I live and work in Minnesota. Purchased stage 3 shirts and Agent 2.0 gloves after coworker recommended them and reading reviews. I was skeptical of both but took the leap. Glad I did on both items. Stage 3 is the best base layer I've found. I was concerned about being too warm when indoors but it breaths well and I don't overheat which is saying something cause I usually run warm. Outside it's wind blocking is great. I can get by with a fairly thin work shirt and an EMS vest. Temps here have gone from -12F to 40F in just a couple days and I was comfortable in both. The Agent 2.0 thermal gloves took some minor break in time but are the first I've found that are actually water proof and warm while being able to use fingers for tasks and the grip is great. Recommend both. I ordered more stage 3 as they are my new base layer for cold weather camping as well.

Very good quality

I was skeptical. I have the maxx dri as well and it has its pros and cons. But I work in northern Wisconsin and just wore this Stage 3 on one of those tweener right around freezing days. And I was astonished! Not only did I not feel cold with the wind whipping off the water, I didn’t feel hot and sweaty sitting in a heated office for an interview. It really does keep the exposed parts warm (material is loose wetsuit-like feel on the arms) and the torso breathable. Now I’m an older should-probably-have-moved-to-Florida-by-now Wisconsinite so my decaying body tends to run a little colder than in my youth. I don’t overheat easily. So the best window of temps may vary with the person but there’s no doubt to me this is essential wear for anyone that’s been cold and hot in the same shift.

It’s a great product and it was sufficiently warm. Material feels almost like a thin wetsuit. The cuffs on the wrists are tight and prevents wind from getting in.

The only complaint I have is that the armpit openings are tight on me, it’s not uncomfortable or digging, but it is noticeable. I ended up putting on a thing base layer under it and it prevented any rubbing issues.

The thing I love most about this thermal is that when I go into the PD to write my reports I’m not burning up. It’s comfortable in 40 degrees outside and 70 degrees inside

Temps have been in the mid 20's low 30's, base layer fits great and is warm. It has also been windy, and this blocks the wind as well. If you're out in the elements I recommend this base layer highly.

I had to order the next size up

I've worn the base layer for a couple of months now. First off, it does work as advertised. I'm pretty warm when going outside and coming back in, so much so that I don't wear a jacket unless the temp is below 30. However, if there is a small wind, I can feel the cold around my hips where the material is thinner. Not a deal breaker, but a chilly spot. The material holds up well and I don't see any wear spots after 2 months of wear.

As for the fit, make sure you have room under your duty shirt for the extra bulk. I had to go up a size. I'm not a fan of the unisex fitting. The sleeves are too long and the torso is way too long. I make do because the shirt is such a game changer, but I'm sick of companies thinking all officers are built the same. If they had a short version, I would buy it in a heartbeat.

Overall, a good base layer worth the price.