Spy's improved Lock Steady 2.0 lens-changing system and fog-mitigating Happy Lenses are defining features of this low-profile, spherical package.
-Seamless OTG (over the glasses) integration with RX eyeglasses
-Comes with a free premium bonus lens
-Streamlined frame venting
-Anti-fog 5.5-base ARC® spherical dual-lens with anti-scratch protection