I recently made a trip to the Goodwill in search of sweaters to recycle and it was an excellent day for hunting. I purchased three sweaters and a vest, all 100% 2-ply cashmere. I knew I was taking a chance on the vest because it had buttons down the front, so if anything, the back would be the only useable portion. But the yarn was so loosely spun that I couldn't unravel it without the yarn constantly breaking. I gave up. It was really soft, so I was a bit disappointed, but it cost next to nothing and I ended up with 6 vintage mother of pearl button, so it wasn't a total loss.