Can some kind soul please help (for what should be a simple thing but has been dragging on for over a month)?

My 10yo son has an Itech HC15 (small) hockey helmet and the press studs have fallen apart (only played a season). My local (Australian) Hockey Store is having trouble getting the right strap. Getting a single chin strap isn't a big priority for most people but it is for my son.
What I need is for somebody (store preferred so I can pay by Credit Card) to put one in an envelope and post it to me down here in Australia. If an individual can help, that'll be great and I'm sure we can organise payment somehow.
The chin strap in question has two short bits of strap on each side of the helmet which are riveted once they are passed through the helmet. The rivets form part of the press stud arrangement that an adjustable (length) chin strap clips onto. The local store can rivet the press studs once we get the right strap.
In case I'm not too clear the helmet in question can be seen at:

http://www.itech.com/itechframe.asp?...t=&surl=&site=

I've rigged up something that will keep it on his head but it's uncomfortable.
A quick response would be greatly appreciated.

Brian Lipscomb
[email protected]