The Schwalbe SV19 Presta Bike Inner Tube is a brilliantly durable tube that is nice and elastic. Each tube is inflated & inserted into a mould so that there is same wall thickness. It's a genius at retaining air pressure and this particular inner tube has a Presta valve.
Features & Benefits:
VSF all-ride approved
Nickel-plated and threaded valves with a replaceable core
Presta type valve with a transparent, polycarbonate dust cap
The low slung top tube and progressive geometry means this bike blends into whatever surroundings you place it; from raucous short-cuts across town to skipping...