The tifosi rx03 optical adapter has been designed and manufactured so that it perfectly fits any of your tifosi podium sunglasses models by integrating into the nose piece allowing the adapter to sit inbetween your eyes and the lens of the sunglasses this adapter by tifosi easily clips onto your sunglasses and when no longer needed can be quickly and easily removed the adapter is sold with lens blanks so that you can nip down to your local optician so that they can fulfil your prescription and