For our more technical sunglasses (SYLURO™, KOPERNIC™, RYDON II™, RYDON™, KALYOS™, WIZAARD™, KETIUM™, EKYNOX SX™) that cannot support a direct in frame RX, Rudy Project has created CLIP-ON RX optical inserts that can be snapped in behind the polycarbonate Rudy Project lenses. Thanks to our patented ‘easy-in easy-out‘ system; our Clip-ons can be inserted or removed with ease. This is particularly useful when you want to wear your contact lenses or when cleaning.