I was about to buy some fleece on Ebay but then realised it didn't say anything about being 100% polyester, or anti-pill or polar. So I messaged the Seller asking whether they knew, they replied saying to the best of their knowledge it is 100% polyester. As the Seller isn't sure, is it most likely to be 100% polyester, because that is the most common isn't it? Can anyone tell from the picture? If so I will post the picture. I'm just worried I'll buy it then it won't be useable.