Adidas RX Ready Rim Performace Insert 49/17 Perscription lens insert The Adidas RX Ready concept guarantees sportsmen and women clear undistorted vision for any challenge. And that means maximum safety at all times; even in extreme conditions. This is a lens insert to create perfect sight whilst wearing you sunnies, eliminating the need for expensive prescription lenses.For use with the following models: A152/a153 On Par A154/155 T-Sight A157 Xephyr A163 Agilis A164/A165 Adivista A262 The Shield A380 Adilibria A382/A383 Adilibria Shield a384 Adilibria Fullrim