Continental Supersonic Tube (700 X 20-25, Presta Valve) D3 Created first and foremost for

Created first and foremost for cyclists

it’s a complete interruption of flow

The ""power Seam"" flat seam for maximum stretchability

Drop flare: 4°

Continental Supersonic Tube (700 X 20-25, Presta Valve) D3 Created first and foremost forUltra light weight inner tube. The Continental Supersonic road long valve inner tube is a must have cycling essential for 700c bike wheels. Super lightweight butyl tube, even lighter than latex but not porous, so no need to reinflate every day. Can also be fixed with a normal puncture kit. The long valve inner tubes enables you to use deep section rims (40mm, 50mm and above) as the shorter valve would not extend out of the rim valve hole. Shorter