Nuetech Tubliss Gen 2TRACTION IS THE KEY TO PERFORMANCE! Rip holeshots, double from the inside line, dominate slippery single track, smoke the competition & have more fun! TuBliss replaces conventional inner tubes with a small red 100 psi insert that creates two different pressure zones inside the tire itself. This enables an incredible 100 PSI of rim protection, increased tire stability and eliminates pinch flats. In turn, this allows you to run very low tire pressure