TheBontraager XXX Lite Bottle Cage. A cage that wont slow you down.An insanely lightweight carbon fibre cage that weighs so little you'll hardly know it's there; that is until you reach down and easily remove your securely-held water bottle. Recommended for on-road use with small water bottles. Bontraager XXX Lite Bottle Cage Features ull-carbon construction Secure bottle retention designed for road bikes Recessed bolts allow smooth bottle transition and better dérailleur clearance Includes alloy mounting screws 19g