Rectangular sunglasses were a big trend in the early 2000s. The Oakley OO9331 Large (Size-61) Black Grey 1458 Unisex Sunglasses are the pair you need if you are into athleisure wear. Just take a look at them and see how crisp and clean they are. The grey lens color and the thick full-rimmed frames will help make a bold statement to go with your sportswear whenever you don them outside. Sunglasses of this design have been worn by big names like actor George Clooney when he goes for his vacations. You can also switch it up and incorporate them into your casual wear instead of pairing them with your sports gear.