From the Seller: Recently lost 85 pounds and went from an XL to an M, so clearing out my entire closet. I only had this piece from Bonobos for one season and it was worn twice. Minimal signs of fading or wear. It is from the fall 2022 season. This is a basic, lightweight sweater. This is nicer than the GAP ones I've listed, but much lighter. Some dudes rock this without an undershirt. To each their own, but this would definitely be comfortable (and not itchy) if you did that. From the Manufacturer: Versatile merino wool you can throw in the wash. (that's literally all Bonobos said on their site)