That mask is really sweet...i like the whole skull jaw thing...anyways a good brand to use is Pyramex Rendezvous safety glasses. I use them in firefighting operations and vehical accidents. their cheap and damn near indestructable. I get my hands on boxes of about 10 for about 11 bucks a box, but i get them with a firefighter discount. online, their $5 per, and get cheaper in bulk. I go thru them really fast thanks to firefighting and general forgetfullness, but ive never been able to break the lenses themselves.
url is here: http://www.safetyglassesusa.com/reblfrblmile.html