Multi-Buy Savings!
Code: 48132.
Schwalbe SV17 700 x 28-45mm Presta Tube - 40mm Valve
 
Extremely airtight! The Butyl rubber compound prevents pressure loss and fewer occassions to inflate. Extremely reliable! Quality control for safer cycling: Each tube is checked twice at the factory to ensure safer cycling. Having the correct pressure means fewer punctures and reduced rolling resistance
 
 
Schwalbe inners do the job and are unlikely to let you down.
Good quality inner tube that holds the pressure (unlike the cheaper types).
Best tubes out there, and this was by far the best price I could find.