This top has the perfect thickness , a nice length and a gorgeous color. I have been buying wool shirts from a competitor but no longer. I'm 5'10" and 174. I bought a size L.

I had originally ordered this in sz S, the short sleeve tunic in XS, and suspected I'd want the tunic larger. Nope, the tunic was perfect, I wanted this base layer to be skin tight, and exchanged it for an XS.

Now it is skin tight, I'm wearing it under a (not particularly nice) wool turtleneck that would otherwise be itchy, and I'm happily layered. It's cold and windy in Portland today, my workplace closed because every road is a sheet of ice, and I'm finding that my house is leaky. I'm happy to have good insulation on my body.

It’s really very tight all over so it will only be used as a winter undershirt but I had planned to wear this as a pretty T-shirt. It is a brilliant purple color

I am 5’7”, 150 pounds, fairly fit and ordered the large. At least an XXL would have been a better fit to wear as a tshirt.

Granted, it is listed as foundation wear.

Very comfy, works well for layering.

I bought a handful of these for a work/fun trip to Europe and put them to the test. They wore well without getting stinky, didn't itch (and I have very sensitive skin) and looked great day after day. I had to rinse one in the hotel shower after it got soaked in beer and it was dry the next morning. These are my new uniform for commuting, workouts, travel, and life.