I've got a size 4 (I think). Was on a 14hh slim pony. not used now. But it has had some modifications. For instance the piece of fabric between forelegs was missing, so had to make a piece from other material. Also added some clips on the body to keep the 'belt' in place. but if anyone wants then make me an offer .....
there is a place on ebay...lady is called corner stone brow bands or that's what she used to come under. I bought my sweet itch rugs from here. Pretty much boet rugs and weren't nearly as much. They actually lasted my boy longer than the boett which he trashed in a few days