Nuetech TUbliss Platinum Standard NitroMousse 140/80-18Nitromousse are 100 PERCENT FLAT PROOF, high performance extra long lasting foam innertubes that replace traditional pneumatic innertubes. Cut, puncture, tear, and hammer the Nitromousse and it will continue to perform, giving you confidence to finish the race or make it back out of the trail without concern. Made from proprietary elastomers that have millions of nitrogen charged micro cells.