How many styles of grobags are out there????? I am so confused. I have come across ones with terry towelling in them, ones that look like a t-shirt type cotton inside and out, ones that have a furrier inside and the outside cotton is like a doona type cotton (tightly woven cotton, itms?). I am buying some off ebay (b/c they are so expensive in shops and on line) and when they get to me they ate not what I thought they were. Also, they have a zipper down the middle, down one side, helloooooo! Oh, I am not confused about the tog though, lol.