Icebreaker Women's Siren Tank

Can't go wrong with icebreaker
I will preface this review by admitting I am an icebreaker addict. If I start listing everything I love about their wool clothing line, this would turn into a novel. So I will cut to the chase. Bought my first siren tank over a year ago and now have it in every color. I wear them all year round, as a layer in winter and alone in summer. I have several other icebreaker tank tops, but this is my all-around favorite because of the cut, which is both flattering, versatile and functional. Deep v-neck but not too low in the front. No need to adjust or re-position while I'm running/hiking and the lightweight wool is always insanely comfortable no matter the weather. I can wear it for an entire week of backpacking without the hint of an odor. I often wear it straight from a run and out to a bar and still get compliments. I am 5'4 118 lbs and have a narrow torso, the XS fits like it was made for me.

Beautiful Tank!
Stylish and extremely versatile. I wear it for hiking and around town, even to parties. I really like the cut, snug but not too skintight, like some other performance tops. I'm usually a size 8-10 and a medium fits fine.

nice design
This is a good alternative to thin-strapped camis that can dig into your shoulders. The material is so fine and smooth it is hard to believe it is wool. I have other IB products and cannot see much difference between the light and medium weights.

unusual fit
Purchased this tank in a large, but sent it back because it seemed to be for a larger framed person. I'm 5'8" and 145. I exchanged it for a medium, which isn't much better. It fits my overall frame okay, but I would need to be an "a" cup with an extremely small ribcage for this thing to be comfortable. I'm a b/c, with a "no flab ribcage" and it is really tight across the chest. It doesn't ride well when it is worn under other items, which is what I intended it for. The tightness problem is alleviated when I pull the shoulder straps up. Doing that helps and at the same time raises the armholes from the bottom of my bra strap to about 3" below the pits. Icebreaker needs to raise the armholes. Fabric and fabric weight, sewing, and color were all good.