I wear a bracelet that I ordered on-line from a company called Sticky J. Can't remember the web address, but if you google medical ID it comes up - that's how I found it.
I like my bracelet because it is not a standard medical bracelet - I find them quite ugly and bulky. It is a simple silver chain which has a plate attached, with the medical symbol and then I have had "type 1 diabetes" engraved on it.
It arrived really quickly in a little red pouch and wasn't too expensive either.