These polarized polycarbonate lenses absorb the horizontal lightwaves that cause glare from light bouncing off water, snow and glass or metal surfaces. Reducing glare eases eyestrain and muscle fatigue caused by constant squinting. Patented foam pads enhance side-shield protection and fit. Neoprene inserts along the temples allow the glasses to float. Glasses come with a drawstring case and retainer cord with quick-release clips.