FIT: Fits almost every type of glasses from brands such as Ray Ban, Costa, Maui Jim, Oakley, etc. The fit is supposed to be snuck and may be difficult to put on initially. This is so your cable strap can be sure to say paired with your glasses. The adjustable capability allows for an optimum fit for both men and women. EVERYDAY WEAR: Luxe Performance Cable Strap is your glasses' new best friend. Once attached, they can stay together forever. They allow your glasses to be worn around the neck when not in use. Keeping them safe from drops and scratches! *GLASSES NOT INCLUDED* LIFETIME WARRANTY & LOST/BROKEN REPLACEMENTS: All straps feature Lifetime Craftsmanship Warranty & Free Replacements if Lost or Broken (just pay S+H fee for Lost/Broken Replacements, max 2)