DD got a set of pajamas for Christmas that are microfleece. (Like this, but a 2-piece: http://www.gap.com/browse/product.do?cid=14520&vid=1&pid=784383&scid=784383012) I know there have been a million threads about treated pajamas, but I am still so confused. They are 100% polyester. The tag says they are flame-resistant and not to wash in soap. My understanding is that they are flame-resistant because they are made of polyester, not because the fabric was treated with additional chemicals. But if that's the case, why shouldn't they be washed in soap? How does polyester respond to soap differently than detergent?
To return them would either mean paying for shipping them to the Gap (which isn't a big deal, I guess, but I'd rather avoid if I can can) or driving an hour each way, which is hit-or-miss since I don't have a receipt anyway. And DD's uncle will ask about them and probably want to see her wearing them on Skype! Ugh. Has anyone found a definitive answer to this yet?