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By insulating your core against the cold while letting moist air escape, the Smartwool Women's Midweight Zip Top helps your body regulate its temperature. The natural properties of soft merino wool will keep you comfortable in all kinds of weather. Plus, since this top isn't made with petroleum-based synthetics, it's a lot easier on the environment.

  • Super-soft merino wool feels great against your skin, and it naturally wicks moisture and inhibits odor
  • Flatlock seams won't create friction points that can irritate your skin
  • Zip top lets you ditch excess heat and cool off when aerobic exercise gets the blood pumping
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Pretty cool baselayer

  • Familiarity: I've used it several times

...but I can only give it 4 stars it after noticing a hole in the fabric after just a few uses. The fit was good for me (I purchased XL based on the other reviews that mentioned it runs small) and I like the thickness of the merino wool so I am using it quite a bit as a mid layer.

Gorgeous color, great quality, runs small

    I guess since this is supposed to be a base layer, it should fit skin-tight, right? Well my muffin top disagrees. I am a size 6-8, and while the medium probably fit as it should, I was a lot more comfortable in the large. Everything else was great, really pretty color.

    I live in baselayers...

      ...and this top is a regular in the rotation. Breathes when warmish, warms when coolish and cold. Makes a nice, slightly outdoorsy-looking top for general day to day wear and also works well as intended (baselayer for active use). Smartwool really has their wool bland down: doesn't smell, pill, or shrink (even when it sneaks into the drier). Fits true to size, if slightly small (which is good, I'm 5'3" with a tiny torso).