Schwalbe AV1 Kids Bike Inner Tubes 12 x 1.75-2.10, Schrader 40mm Valve (2 Pack)

Schwalbe AV1 Inner Tubes Schrader 40mm Valve are designed and manufactured to retain air pressure considerably longer than their competitors. Not only is each individual tube inflated and inserted into a mould to ensure that there is even wall thickness a