Wore this on a plane and a few times on vacation, didn't get smelly or need washing. It's a great odor-fighting top for vacation and is very flattering.
I am 5'4, 152 lbs and I got the large and it fits perfectly. Loose without being baggy. It's a good shirt. Not as soft as cotton but not scratchy. It is thinner than cotton. I got the blue and it's not see through.
I love merino wool products and this tee shirt is a dream, repels odors, so soft and comfortable. I wore it kayaking in Florida and stayed so comfortable. I bought it in a medium and a large and I am 138 lbs and both fit fine, medium is a bit more fitted of course. Great colors and I will buy more.
Was fearful that the tee would be scratchy but it is not.
My first merino shirt and it is light-weight, controls odor and comfortable.