The cataract surgery required a short sleeve shirt and I froze to death on the operating table. For my second eye surgery I planned ahead and wore this merino wool shirt and a 100% cotton short sleeve henley t-shirt over the merino wool and felt absolutely comfortable during the procedure. Although it fits a little loose for my height of 5ft 3in and 127# height, I bought the men's size medium. I didn't like how the collar looked on me so I carefully trimmed the collar and trimmed it very tight. to the waist of the collar - it's impossible to see where I made the cut. Now I have a Henley style shirt and it looks more feminine. This shirt has already become one of my winter favorites. The short sleeve is great for our desert climate.