I am *this close* to bidding on a Didymos advertised on British ebay. Problem is that the seller has listed the size as 440 cm. A quick visit to the Didymos site indicates that it should be 420 or 470 cm. Do they shrink? Could a skinny person accomplish the size 6 carries with a size 5 wrap? Am I totally nuts for even thinking about buying this as we're still six months from TTC?