If you work outside, your eyes can get sunburned, just like your skin. These glasses shield your eyes, fit over any prescription glasses, and stay snug even if you're moving around. Unlike other fits-over glasses, these block the sun from the top and the bottom, allowing your eyes to adjust, and allowing you to use less sunscreen near your eyes. These glasses aren't just for Hancock and old folks anymore, because the price makes them way too practical in comparison to prescription sunglasses, or even fidgety snap-on alternatives.