If you aren’t carrying a spare tube in your ride pack already we’d recommend taking a look at this high quality and dependable tube from Kenda. Available in Presta or Shrader options to fit a range of wheel sizes and tyre widths.Who’s this item for: Riders in need of a new inner tube for those pesky flat tyre situationsRemovable valve core: Presta valves feature a removable valve core but Schrader valves do not.Tube wall thickness: Standard thickness.Materials: Synthetic butyl rubber with a metal valve core and stem.