I received this long sleeve in one of the mystery packs. I wasn't sure what to expect, so I figure the mystery pack would be the way to go. This shirt is great. It has a night weight to it and the material is very soft. It is perfect for layering on a colder spring/summer day.
Sizing is pretty spot on for a unisex, yet sort of women's fit. I wear a Medium in most of my fitted clothing, but I ended up sizing up to a Large. I'm glad I did. It fits well around my mid-section and bust (I'm very busty). It is a little longer on the sleeves, but I always roll my sleeves at the end, so no worries there.