geoff wrote:
I don't know the current regulations. But the normal plastic lens used in
specs are almost bullet proof and used to be considered an acceptable
alternative, especially if side guards are fitted.

Yes, but my existing frames are very small, I want a frame that gives
me a bit more protection and side pieces.

Why not just buy some safety goggles which fit over them Chris

Because the extra layers degrade one's vision considerably, and steam
up more easily.

--
Chris Green )