I'm a size 10/12 female and bought this in a large for longer run train during the winter months. Just wow, it's so luxurious and warm but not heavy or restrictive. I could wear it all day. Top class

There is nothing luxury about this unfortunately and I was disappointed with the quality Fits and feels like a regular long sleeve primark t shirt

Great slim fit, lightweight and plenty of stretch. I bought another one.  Could be worth sizing up as I did.