Review on RIVBOS RB831: The Ultimate Polarized Sports Sunglasses For Men With Unbreakable TR90 Frame by Douglas Irwin

The build quality of the sun glasses are flexible and sturdy, and the overall fit is just right, and very light weight, I didn't buy these glasses for the sun, I bought the yellow lenses for night vision and they work very well blocking out a lot of glare from headlights of on coming traffic, however, the yellow lenses is not really meant for daytime use with a sunny day, in fact they may damage your eyes so a darker color Len's will be needed for sunny days, I wear these only at night and they serve it's purpose well.