Bringing Lezyne's Metal Kit along is the difference between being stranded and making it home. It contains six glueless patches, a tire boot and a stainless-steel tube scuffer. All of this is stored in a waterproof aluminum box that fits neatly in a seat bag, jersey pocket or hydration pack.
Schwalbe tubes retain air pressure considerably longer than standard tubes. The quality and purity of the rubber mixture directly affects the quality of the tube. - Decreased air loss design - Butyl rubber