TheSpecialized Road/MTB Rib Cage II is stiff, lightweight and it will keep your bottle secure. This cage is perfect for both road bikes and mountain bikes and as it has such a low bottle position, it greatly improves aerodynamics. The tuned compression design will secure your bottle in place throughout rough terrain, but it still maintains an easy in/out system.This bottle cage has been constructed from a reinforced composite material for high strength and druability at an exceptionally low weight.The cage has a minimalist, sleek design with razor-sharp graphics and it's available in a variety of colours to suit every bike.Specialized Road/MTB Rib Cage II Highlights-Super-low bottle position improves aerodynamicsTuned compression design allows for secure bottle retention, with easy in/out accessibilityReinforced composite material improves durability without adding weightMinimalist, sleek design with razor-sharp graphics" More info