Sunshine in your eyes can do more than make you cry; UV rays, both A and B, can cause serious damage to your baby blues. Since you can't put sunscreen on your eyelids or cover your cornea with zinc oxide, you need to protect your peepers with quality shades that are UV rated. It is recommended that you wear shades the provide 99 percent UVB protection and 95 percent UVA protection, but many sunglasses offer 100 percent protection from both. When shopping for shades skip any labeled "cosmetic" — these darkened lenses are just for looks. Also note, that polarized glasses decrease glare and do not provide UV protection unless they specify that they do.
You don't have to spend a fortune to protect your eyes at the beach when biking. Here are some great picks ranging from $30 to $60.