❀Construction : Made from high carbon fibre composite materials, significantly reducing overall bike weight and enhancing riding efficiency. ❀Aerodynamic Overoll Design : Features smooth curves and wind breaking structure to minimize air resistance and optimize cycling . ❀Secure Bottle Retention : Unique tail hook ensures firm bottle placement without slipping, even on bumpy terrains for safe use. ❀Wide Compatibility : Fits both road bikes and mountain bikes, accommodating various cycling styles and riders preferences. ❀Optimal Size Configuration : 72mm inner diameter perfectly fits most standard water bottles for quick and easy access during rides.