The michelin aircomp latex road inner tube features natural elasticity to reduce rolling resistance weighing just 70g its one of the lightest inner tubes available on the market ad key features one of the lightest inner tubes available weight 75g manufacturer claimed the ultimate accessory for todays high performance wheels and tyres smooth valve short valve 36mm 40mm or long valve 60mm available for use with 1820mm or 2223mm tyres available in long and short valves