Should you invest in a killer swimsuit this summer? Yes, absolutely. Should you spend a lot of money on sunglasses to wear to the beach? Definitely not. Since sunnies worn by the sea tend to get trashed by the elements—sand, salt water and the bottomless pit that is your beach bag—this is one accessory you should not spend a fortune on. Knowing that these shades will have a short shelf life, this is your chance to play with trends and colors, without a major commitment. Here, the best sunglasses to sport while catching some rays this weekend.