Designed for fans of intense effort such as vertical kilometre racing these glasses are uncompromising when it comes to performance & comfort. Also available in a REACTIV Photochromic version the mono-lens guarantees a wide obstacle free field of vision regardless of light levels. The suspended construction adds outstanding ventilation by encouraging air to pass between the lens & the frame. Last but not least the Air Link concept & its shock absorber insert at the end of the temples offers even better grip & lightness.