Schwalbe Road Tubes can be the difference between a two-flat day, and a no-flat day. Made of high quality, pressure-filtered rubber, these tubes are built for the long haul, but are plenty light for training, and even racing. Product FeaturesSCH0056 - Road Tubes - 700cMaterial: RubberSize: 700c RoadValve Type: 40mm Presta, 60mm Presta, SchraderWeight: [700c x 18-28mm, 60mm Presta valve] 105g; [700c x 28-45, 60mm Presta valve] 150g; [700c x 18-28mm, 40mm Presta valve] 105g; [700c x 28-32, 40mm Presta valve] 115g; [700c x 28-45mm, 40mm Presta valve] 150g; [700c x 28-45mm, 40mm Schrader valve] 150gRecommended Use: Road bikingManufacturer Warranty: