Challenge Latex Tube 700 X 23/28c, 48mm Presta Valve Perforated Vitamin C as an anti-

Vitamin C as an anti- inflammatory & antioxidant with citrus bioflavonoids to aid vitamin C absorption

Recruits oxygen to the muscles

Not all stomachs have the capability to handle the artificially flavoured

Low: 4 lumens / 120h

Adjustable prongs

Challenge Latex Tube 700 X 23/28c, 48mm Presta Valve Perforated Vitamin C as an anti-Description Latex inner tubes are far more supple than normal butyl tubes. They adapt quickly to the tire changing shape while cornering and rolling. The unique Challenge seamless latex inner tube saves more than 3 watts per wheel over a butyl inner tube according to German, Finnish, Belgian, Dutch, UK and Americal testing. Challenge produces the only seamless 'one piece' latex inner tubes on the market providing a smooth, balanced ride with no pucker