Ultra 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 valve inner tubes are ideal for wheels with rim depths of 24mm or 30mm.
Presta valve tubes are most commonly used for road wheels (700c) and on a few MTB wheels as the valves are thin, whereas Schrader valves are more commonly found on MTB wheels as valve is larger and won't fit through 700c rim valve holes.

Specifications
Super lightweight tube, the cheapest way to save overall wheel weight
Size fits 20 - 25 mm tyres
Presta valve
All tubes have a seamless construction, with a mould-cured vulcanisation, to ensure uniform roundness

Mfr Claimed Weight
50g