Had to take drastic measures for left lens - Wiley X Brick Sunglasses Extra Replacement Lenses

Drastic measure might be overstating it, but I had no problems with the right lens, popped right in, nice tight fit. Left lens was too big to fit in the frame. I had to use my Dremel tool to sand down the edges/ends to make it fit. Got it to work, but it took MUCH longer to replace than I really cared or bargained for. It was still cheaper than buying a whole new set of goggles though and they work just fine!
Pros: cheaper than replacing the entire goggles
Cons: left lens didn't fit right

This review was written in the old system and had content requirements that are different than reviews written today.