When I spotted these sunglasses I was very excited and decided to make them for Halloween but I think they can be worn any day.
They are compatible with the glasses slider made by Iconic Sims (click it). This slider allows you to move sunglasses up and down, scale them by the x-axis or even rotate and put them on top of the head. See examples here. I highly recommend downloading this slider. They are also available for kids and adults, click on the picture below download links to check them out.