Just treated myself to a kromer cap, seems much better than a reversed baseball cap as it pulls down over your head more, and has a pretty cool flame design too, wifey says she won't lose me in the garden wearing that, will get a cammo one next time then
blimey thats a hard question to answer, I got wifey's tape measure and meaursured around me bonce, about an inch above me lug holes and it come to 56cm, I ordered a 58cm to allow for a bit of room and it fits nice... got mine from http://www.ukwelder.com/
Good point woody, l wear glasses that hold my lugs away from my head, so the 58cm one I can't get my ears in, when I've given this one a good caneing will order a 60cm to try, they do one with lovely pinup ladies on too