In my opinion, the most important thing is to choose a pair of sunglass that really suits you and the age doesn't really matter. You can have many choices. I'd like to give you some advices. In the first place, you can choose some sunglasses that are designed in concise and generous style, which can show your personal good taste. Secondly, I suggest you to pick sunglasses in black, gray or brown colors. These dark-colored ones can help to block more sunlight and UV rays for you and make your eyes more comfortable when you're in the enclosure of the sun. What's more, it can also make you look elegant and mature.