I do a lot of thrift store shopping. My two favoritest shirts that I own are both great vintage finds that are made out of this super-thin wool. It doesn't look like wool, or even feel like, and they are not itchy at all to wear, but the label says "100% wool." I want to loko on ebay for clothing made of this fabric, but I'm not sure what to search for. "Wool" pulls up way too much stuff. Does this kind of wool have a specific name?