I love this shirt. It fits my body well and provides an amazing base layer for almost any day. The wool repels odor, insulates well and breathes well. It's comfortable to wear all day (and my days are long.) One thing: it fits very close to the body. I like it, particularly as a base layer, but you may not. I wish they weren't so expensive and you do have to be careful when you wash them, but those are small sacrifices. I will be buying more of these because I basically wear one every day.

This is by far the best t-shirt I have ever bought. I wear this thing any time I think I'm gonna break a sweat, running, biking, climbing, hiking, my record is 9 days straight, day and night, backpacking. By then it started to hold a bit of odor, but all my other polypro would have reeked after only the first couple of hours. The skin tight fit is amazing, the wool is really soft and comfy, can barelt even notice it. Well worth the investment, but watch the sizing, I generally wear a medium to large normal shirt but I heard these run small so I got a large and it is skin tight. I also bought an XL and it fits more like a normal T. I also have the long sleeve, and love it even more.

I love this shirt. I usually wear popular poly t-shirts, not anymore. I will be ordering more of these in the near future.

Oh, by the way, "Backcountry" rocks and has the quickest delivery time of any online store I have ever ordered from.

Well satisfied.

think this is a great shirt. very comfortable and functional. when it comes to sizing, i usually float between medium and large, definetly had to go with a large with this as the fit is somewhat snug. was a little scratchy at first, but after a couples washes was fine. great shirt.

I got this for my husband for running and biking. It does fit snug so if you're uncomfortable wearing close fit shirts then this isn't the shirt for you unless you order a size up. He really likes it, it keeps him cool when working out.

I bought this short-sleeved shirt as a next-to-skin base layer for downhill skiing. I was attracted to it because of the snug fit and wear it under an older Bodyfit 260, which I wear all of the time even when not skiing.

Pros:
It’s snug so it feels warmer than its light weight suggests.
The lack of bulk allows it to layer nicely under just about any other second layer.
The neck is snug, but not too much...I wonder if Icebreaker made some changes here because earlier comments suggested the neck was a little loose and this one is definitely not too loose.
It’s Icebreaker merino wool so it’s comfy and resists body odor.
Backcountry’s free shipping got it here in 4 days.

Cons:
While it’s designed to fit snugly, it also runs a bit small and I think most buyers would want to move up a size beyond what they normally wear. I’m 5’10”, 160 pounds and usually wear smaller ‘mediums’ or larger ‘smalls.’ If I get another one of these, it will be a ‘large’, a size I never wear.

Irritating small stuff...literally—the ‘care tag’ had such a stiff edge, I borrowed a ‘seam ripper’ from my girlfriend and very carefully cut out the stitching that held it in place.

Feels great, doesn't stink, essentially disappears.