Rad8 now provide the tried and crash tested 504 and 505 frames with prescription lenses. The frames are fitted with impact resistant CR39 plastic, with photochromic Transitions 7 (clear to grey) lenses.  The lenses also include anti-glare and anti-scratch coatings.   ​As the prescription lenses are bespoke, they do not have the Clearview anti-fog coating but are supplied with an anti-fog cleaning cloth.  Sample frames are available to try in all styles.

Prescription MTB Glasses