CHAPS, a Polo Ralph Lauren Company, made this excellent soft yet durable, thick weave, men's long sleeve polo.  It will work as a sweater, or as a thick polo shirt.  Great for the fall.  Please check out all the measurements to ensure a good fit. I would like to avoid unnecessary returns.  The material is soft cotton, but also contains just enough nylon and elastine (Spandex) for a little stretch and a great fit.  In stores for $89.00.