Schwalbe SV Presta Tube Tyres
Schwalbe tubes are designed & manufactured to retain air pressure considerably longer than their competitors. Not only is each individual tube inflated & inserted into a mould to ensure that there is even wall thickness & excellent air retention, they are also stored under pressure for 24hrs to test air retention. Valve length of 40mm for Standard version. Weight 190g.
Size guide - 700c SV12 - 26mm 28mm SV17 - 32mm 35mm 38mm 44mm 26" SV12 1.8" SV13 2.3" 650b SV12 42mm SV13 48mm