Buzz.
Not so simple as you need the same press-studs if you intend to use the half that is left.
May be simpler to stitch velcro to the strap and earpiece.
Steve.

Hi Steve,
Others may find this useful too...
The parts or the press-studs on the ear-piece were intact - nothing wrong with them, but the ones on the webbing had pulled through.
I emailed Plusmax and the response was to get hold of UK Airsports.

I emailed UK Airsports and Richard was kind enough to send me some press-studs and the dye used to attach them to the webbing as long as I promised to post it back to him.

I paid for the shipping, the items arrived the next day, it took me half an hour to attach the new studs (most of which was taken up by working out how the dye worked!) and I then wandered down the road to the post office. The dye was back with Richard the following day...

Helmet looks like new again...

Cheers! Buzz

That is good to know. I am a dealer for all the UK airsports stuff but not had the issue with a Plusmax so far. Steve