Security alarms and clothing rant

I'm getting so tired of discovering when I get to airport security that
some item of clothing I'm wearing sets off the metal detector. It's
happened again now with some new shoes I just bought that have some
metal buried inside them somewhere. I seem to be collecting more and
more clothes that are nogo for flying. The craziest items must be a
pair of trousers made by Patagonia, presumably designed expressly for
travellers, with a hidden pocket that has- yes you guessed, a metal zip,
and the money belt with the - yes you guessed right again, a concealed
metal zip. What a wonderful invention, a concealed money belt that you
have to take off to get through security.

Is there any outlet that supplies clothing that is guaranteed not to
activate metal detectors?

T.