It’ll be a great base layer. I’d say the fit is a little relaxed, but that’s my preference…it’s super stretchy so you could size down for a closer fit, but the material is so thin I don’t think it’s bulky as is. I usually wear a petite L and the L is great length for me. Sleeves a little long but fitted so they don’t look sloppy, they don’t run down past my wrists.
I just wish there was a way to make these garments more durable without sacrificing comfort. I do prefer this fabric to similar ones by trendier brands. This is actually thermoregulating and well crafted. Flattering and classic style. More colors, please!