This is a light-weight top that can be worn indoors or out. The soft alpaca feels great to wear. I am 6 ft tall and around 165 lbs. I initially ordered a large which was much too big. I exchanged for a medium which fits fine. I should mention I had no trouble with the exchange process. I was provided with a pre-paid label and sent the sweater back to a US address. I received the new replacement in no time from Peru.
I never know whether an item's fit will mean that I need a medium or a large. The medium size in this sweater works for my 5'11", 170 pound frame. The colors are great, and I hope that it lasts a long time.