Designed to fit comfortably and securely over 99.5% of all prescription eyewear frames. Extra Large Fits over prescription frames measuring less than 5 1/2"w 2"h. Six sizes to choose from. 360° of Protection: It is important that a sunglass provides protection from all angles. Cocoons patented frame designs block damaging UV light and glare from all angles, completely isolating the eyes in a cocoon of filtered light. Each pair includes a custom designed protective neoprene case, large lens cloth and a limited lifetime frame warranty.