Guess Sunglasses GU6981 90W 54

A great pair of Guess glasses can change your entire look. With a wide variety of lens shapes and colors to choose from, you'll find the perfect pair of sunglasses or eyeglasses to suit your individual style. Whether you're looking for something sleek and sophisticated or playful and fun, Guess has just what you need. All our glasses are made with only the finest materials, so you can be sure they'll last for years to come.

For the great majority of people M is the right size. It is very likely it is going to be the correct size for you too. To be sure, use the following trick using a standard credit card: