Terramar Woolskins Long Underwear Shirt - Merino Wool, Long Sleeve (For Women)

Using the words, "relaxed fit," I bought a S, and it was tight, especially under the arms. Thinking one size up would do, I ordered a M, with similar results! I do have larger biceps for a girl, but am usually a 6/8. I am now exchanging the M for a L. The top feels slightly scratchy to my skin, but I am hoping liquid fabric softener will help. I have this product in the bottoms, and love them. Those actually do run bigger--the S does fit--and are not scratchy. The waist is high enough not to show your butt crack, but low enough not to be, "grannie bottoms."

Nice product that is unfortunately too tight in the neck. I normally like turtlenecks for winter wear, but this is just too tight. If you want to wear it unzipped, like the photo, it's fine. Don't plan to zip the t-neck up. If I order again, I will get a crew neck. Following on advice of the other reviewers, I ordered a Medium, which is indicated at size 10-12. I am normally an 8 or maybe 10. The medium fit me fine in the body - just not the neck. I like the idea of returning to wool for a baselayer - I've had it with the poly-pro stench. This is a nice product except for the neck.

Good layering piece. I ordered the next size up for perfect fit.

excellent product for the money! performs very well alone or as base layer. no chafing.

I ordered one and used it so much when cycling that I ordered two more. In 20-30F weather, it keeps you warm without letting you overheat when combined with a lightweight merino wool athletic sweater and a windbreaker. And despite lots of sweating, it does not get stinky. Or, not very fast. I also wear them as a base layer at home. I can keep the thermostat down without having to wear the old, thick, itchy wool underwear I once did. A note on itchiness: I don't find that this itches, but it does feel like wool. A very sensitive friend of mine thinks it itches slightly.

Fits regular. Not relaxed. I'd say order the next size, unless you really like your shirts slicked over your skin.