X8-100Engineered to be Virtually Indestructible, X8 Mens Ophthalmic frames are designed using our Nylo FlexTM material, built specifically for ruggedness and flexibility. Tough enough to be bent and dropped, X8 frames are stylish and Take Action when going from the classroom or office to the gym or the great outdoors, while providing non stop vision performance. Size: A: 54 B: 35. 6 ED: 57. 8 DBL: 16 TL: 130