In reply to becauseitsthere:
> Am I alone in thinking that people running with these look like tw*ts.
Judging by the 'likes' youre clearly not alone. But they are a great piece of kit for runners who want to have their phones on them but not have them in their shorts or a bum bag.
In answer to the OP. I bought a cheap Karrimor one from Sports Direct. It served me brilliantly for marathon training and actual marathons. It never chaffed and the phone didn't come close to falling out. Great for storing plasters and gel pack on race days too.