I've got these :-
Mile High - ONLINE STORE - Rapid Eyewear - Pilot & Aviator Sunglasses, High Quality, Versatile Aviation Sunglasses
Excellent for a "cheap" pair of sunnies. Comes with several interchangeable lenses for different conditions, which you don't even get with the much more expensive brands. Came in really handy having several lenses when I was flying VFR on top yesterday in the bright sunshine, then when we came back down through the cloud, switched to the cat 0 lenses to brighten it up a bit.
Also if they break, it's not such a huge dent in the wallet either as it would be with some of the more well known "brands".
