Welcome, FOSS tubes. Everybody hates punctures, which is why newer better puncture-resistant inner-tubes are constantly being invented, and the gravelly side of the road is littered with their flaccid carcasses as for a variety of reasons they fail to beat the general all-round user-friendly convenience and cost of a normal inner-tube. That’s exactly where FOSS Tubes come in.
The latest tubes to step up to the challenge are these ones from Foss, who claim their tubes are not just puncture resistant but also lighter and more environmentally friendly than your normal inner-tube, quite the triple whammy. Each is a bold claim by itself, but as the Foss website proudly proclaims they’re “a unique, energetic, strong conqueror”. And who would dare argue with that?
First off, Foss tubes claim high puncture resistance because they’re made from a highly polymerized un-vulcanized rubber composite, which is special because if punctured the tube material forms an air-tight seal around the thorn, nail or puncture intent sliver of glass, retarding the speed of the leaking air. This means that you won’t know you’ve punctured as long as the offending item is still in the tyre, or at worst it will go down incredibly slowly, allowing you to get home.
The Foss tubes are environmentally friendly because the modified thermoplastic elastomer compounds (TPE) they are constructed from means they can be recycled with other TPE products, thus minimizing waste & protecting the environment.