The Tubolito MTB Plus inner tube is an ultra-lightweight inner tube made of an innovative material, developed with a focus on plus tyres used on MTB electric bikes. Compared to a conventional inner tube, it has significantly higher puncture resistance and a weight saving of 60%!Weight 105g (27.5") and 110g (29") Reduces rotational weight and extends range Compatible with 2.5"- 3.0"tires Only in version with SV42mm galus valve Effective way to reduce overall bike weightInstall into rim with Tubolite inflated to 0.2-0.5 bar. Inflate to this value outside the rim, making sure the valve is pointing inwards to avoid unnecessary stress on the material.