I have this shirt in the Pesrson Stripe/ Birch White. I was initially attracted to it because of the color, and was sold when I realized it was wool. It's so so soft and not at all itchy. I love to wear it over tank tops on cool summer nights and dewy mornings in the mountains. I get so many wears out of it with minimal stink. It does run on the tight side. I have it in a medium and I'm 5'8 and 155lbs--medium is my go-to. I would just say it's a bit tight in the shoulders. Size up if you want to wear a short sleeved tshirt under it; stay true to size for just a tank top or sports bra!