When natural sunlight bounces off a reflective surface (such as wet road, snow or water) we experience impaired vision caused by glare. Polarizing lenses eliminate glare giving improved visual comfort and safety. When using polarizing lenses, the colours around us will appear richer and more vibrant.
The lenses give 100% UV protection, so are ideal in bright conditions. http://www.essilor.ie/productinfo/pdfs/sunrange.pdf