Bought the Rose/Smoke coloring in a Small for my wife who wears Small in Icebreaker but has gone boarderline XS in larger fitting clothing like REI or Columbia. She's probably 5'6" 120. The shirt is fitted like a baselayer very close to skin, but the coloring (Rose) doesn't allow the bra color to show through so the shirt works as a solo layer in warmer environments as well. The shirt is so soft that at first my wife didn't believe me that it was merino! Sleeves were perfect length to use the thumb holes without being too long.
**Edited the stats (hopefully I don't get in trouble with the lady.)

I wore this shirt for a couple of days hiking in Chile and it was great. It didn't smell and kept me warm with just a lightweight jacket on top. The medium was a great fit for a standard size 6-8 sized person. I got the rose color and have received compliments on the shirt.

Sweet midweight shirt! I was very happy with the fabric and how comfortable this shirt was throughout the day. The best part about it is that I couldn't smell myself at the end of my day hiking around in the Wasatch backcountry. Super breathable and the thumbholes helped keep snow from getting up into my arms after I took a bit of a digger while skiing. I purchased a small, but it is a bit snug and am debating on getting a medium for my next purchase.

Love this shirt ... it fits a bit smaller than expected. I ordered a M because I wear a M in icebreaker shirts, but I found this fits a bit smaller than that.

Love it so much I bought the mens version for my husband. Great fit, very comfortable and washes well. If there were more color options, I would buy them all

The good: it's a great base layer -- thin merino wool.

The bad: I'm 5'6, 135 and a 34D. I read the reviews, and wisely ordered a size up (large). The chest was snug, but fine. The hips were *really, really* snug, but workable. The neck was huge, but I expected that. This shirt is really built for a non-curvy girl.

The straw that broke the camel's back? The thumb loops. I love thumb loops, but these loops weren't positioned anywhere near my thumbs. If I let the sleeves hang naturally, my pinky finger is the closest finger to the loop. In order to get my thumbs in the loops, the sleeve needed to rotate 90 degrees -- I hate twisted sleeves.

Bottom line: I really wanted to like this shirt, because it was such a steal. I knew it was a gamble -- and unfortunately they're going back.

I bought this at the begining of the ski season. I work outdoors at a ski resort. I wore this everyday and still fits great, and dosent hold my stink! Fits great, looks great hold up well......I also wash and dry it like a regular old t-shirt!

It's sized & fitted to be a true base layer, so keep that in mind. I was looking for more of a mid-layer, so I ended up returning this. Overall, it was a nice tee, but I'd rather have the wool as my mid-layer.

I was looking for a long sleeve shirt that I could be active in and not overheat. I also don't like wearing bulky layers, so wanted something that would keep me warm too. This shirt fits the bill, and it fits so great too. I've had a hard time finding shirts I'm willing to spend good money on. I am pretty picky, but I love this shirt. I wore it for the first time today even though I bought it a few months ago. Just hadn't gotten cold enough until now. Love it. I wasn't crazy about the grey accent at first as it looks white in the picture, but I really like it now. It just wasn't what I expected. I love the color now!!! I bought the Rose/Smoke one in Large. I am 5'7", 160 lbs.

this has to be the best deal on a merino shirt if you buy on SAC. it is cut well, seems durable and is very comfortable. i expect to get a lot of use from it. i'm a petite 5'1" 115 lbs and got an xs. it's very close fitting on me but i wanted it that way. it's not as soft as smartwool, but for the money it's a good quality piece

Backcountry.com's customer service is stellar, their sizing could use some work. I ordered this because for $30 I don't mind the shirt being a bit tight in the chest (not all backcountry girls are an A cup), and the arms being saggy. Overall the shirt is super soft, cute color/cut (not boxy), and will work well as a warm layer this winter.

This is the 3rd Backcountry wool top I purchased. I like all of them because Backcountry produces high quality products including great fit and materials used.

This shirt fits great! I have a fairly long torso and it is so ice to have a shirt long enough to not expose the small of my back to the cold and finally a shirt that fits me thru the shoulders! Most major name brands would sell this shirt for over $60! I wear this shirt backpacking, skiing and running. Absolutely my favorite base layer in cold temps or long sleeve solo in warmer temps. I'm buying another one!

Love it! Especially the monkey thumbs. I ordered a medium and I am usually between small and a med. And I can still wear a thin layer underneath. Neck isn't very close fitting but otherwise its great.

nice material but neck area was for a triple chin kind of gal! The neck area needs work ...otherwise it would have been a keep for my girl!

I'm glad I read the reviews, I usually wear a small, ordered the medium, perfect fit! It does not feel like wool at all, very soft, light weight material. It is not heavy like a thermal layer, better for the base layer or days that it's not real cold. I had it on for hiking and will use it as a base layer for backcountry skiing.

I returned this item. The material felt very good, but the fit was all wrong for me. It was way too snug (and I am 5'6" and weigh 115). I have since on another site bought a Smartwool zip top, medium weight, in a men's small. Perfect.

I bought it because it was 1) wool and 2) on sale. It's a good layering piece. The merino wool knit is smoother than I was expecting; it goes well under t-shirts (a standard look here in the Pacific Northwest) and slides under jackets. The neck is looser than I've experienced in similar shirts, but it's not floppy or sloppy-looking. I, too, wish for maybe an inch more length in the torso (and arms!) but I think that for most women the fit will be fine. I did order a large instead of my usual medium, however.

I really wanted to like this top. The fabric is actually softer than Ice Breaker but the fit is dismal. As you can see from the other reviews, you have to order a size up. I normally wear a small, didn't pay attention to the reviews and ordered the small. It fit fine through the shoulders and arms but from the chest down it was waaaay too tight. So, I ordered the medium. The chest and waist fit right but the arms, shoulders and neck were so big that it was useless for me. My husband's neck could have fit in this top! I'm not shaped like a pear..honest. I wear a small in Ice Breaker, Patagonia, North Face and it all fits me perfectly. This piece is just not cut well. Hopefully the next version of this top will be better.

i bought this sweater in the maroon color and the guacamole color. they are great for running in cool weather. they are lightweight yet keep me warm. i love the thumb holes so the sleeves stay put. my only complaint is that they run a bit on the small side, however, come ski season i'll probably like that because they'll be easier to layer.

I ordered this shirt because I have fallen in love with the Merino Wool products and find them great for going on runs on cool days. This shirt definitely lived up to that expectation. I also love that its a bit longer on the torso. That way I dont have to worry about my shirt riding up when I'm on a long run. Sizing does run a bit small, as with all backcountry.com products, so if you are looking for a looser fit, definitely go a size up. Other than that, I love this shirt and think its a great buy.