FIT: Fits almost every type of glasses from brands such as Ray Ban, Costa, Maui Jim, Oakley, etc. The fit is supposed to be snug and may be difficult to put on initially. This is so your cable strap can be sure to stay paired with your glasses. The adjustable capability allows for an optimum fit for both men and women. Luxe Performance Cable Straps come in two different sizes. This helps you have the correct length for fit and for the adventure you are about to take. This way you are confident that your eyewear will stay in place no matter where the road follows.