Sleek & Warm
I'm a trim 5'10" 150 lbs and the medium is a perfect fit. I can easily fit a thin base layer underneath my sweater. I do have one complaint: if you go with the black be careful about wearing it while petting your girlfriend's cats -- you'll be picking white hairs out of your sweater all night. Overall I am pleased with my purchase.

Excellent Choice
I've been on the lookout for a replacement for a similar Lowe Alpine sweater which I've loved but is starting to wear through from abundant use. This is just perfect; a little lighter, a more flattering fit, and the exceptional materials and workmanship I've come to expect from MH. I'm 6"1", 205# (just for reference, I wear a 16.5/34-35 dress shirt) with a slightly longer-than-average torso, and the size large is just long enough so that when I sit at my desk chair it covers up any possible "exposure." The sleeves are perfect length - just over the cuff of any long-sleeve shirt underneath. The fit is close enough that it doesn't look baggy, but still doesn't highlight my deskjob mini spare tire. The materials and construction seem great. The inner fleece layer is very soft but thin - it makes the sweater more comfortable but not too heavy, and allows for better temperature regulation. Without long sleeves underneath, it's more comfortable than most sweaters I've worn but there is still some itch (guess it's the price you pay for a thinner inside fleece). I could do with the MH bolt logo on the left sleeve being smaller than it is. The little bolt accent on the back of the collar is kind of cool though. I got a killer deal on the 'squash' color, which I was a bit concerned about, since I thought it slightly resembled puke or other unpleasant bodily substances. However, it's not as bad as I thought. Kind of a brownish-greenish-mustard color. Not something I initially expected to look as good as it really does. I also like the mix of the rib-knit wool on the shoulders and top of the arms, with the rest being a standard knit. The little zip arm pocket isn't necessary, but I've found good uses for it (chapstick, credit cards, cash, tickets, etc.). The nice thing is that it's fairly incognito, so the sweater is nice enough to wear out on the town without looking grungy -- assuming it's clean :)

Great sweater
This is one of those items that I wasn't sure about by looking at the picture but took a chance because of previous reviews and the description. It is perfect. It fits perfectly (a little form-fitting through torso but I like that) and sleeves are perfect length. Please note, the wool is lined with a very thin fleece which makes it softer (and warmer) than other wool sweaters. And, it looks great! This is a great sweater. I may buy one in Blue next!

Best sweater gift
I gave this sweater to my son-in-law last year and he wanted another one this Christmas. He wears it a lot and loves it.

Love my new sweater
Great sweater - nice fit, good looks, good value. Fits well under a shell or fleece. My second Mountain Hardwear sweater and I wear one of them most of the time in cold weather. Highly recommend.