XLAB Aero Carbon Wing System with Xenon CagesTWICE AS FAST: Extensive aero research offers nearly twice the time savings over previous generations. INCREASED ADJUSTABILITY: From the carrier to the cage, all optimizing speed and bottle access. INCREASED BOTTLE RETENTION: Cages re positioned for optimum retention and easier access. CARBON BEAM: Special proprietary layup helps reduce cage vibration. WIDER COMPATIBILITY: Fits the widest range of saddle rails by mounting on the saddle's horizontal