FOSS tubes are made of high-polymericed rubber mixture, but without being vulcanized. Penetrating objects are getting enclosed by the material so that you hardly notice an air loss. This increases the emergency running behavior of the tire in case of a defect as no explosive air loss occurs. Thus the tube is considerably more puncture protected than a normal butyl tube.
Due to the low density the FOSS tube is 30% lighter at the same size compared to a conventional tube.
Attention, the tube can not be patched with a normal patch.
There are special self-adhesive FOSS patches required. Alternatively, the tube can be vulcanized, e.g. heatet up with a lighter and "glued" on the damage location with a flat nose plier.
The tubes are completely recyclable.
ATTENTION: FOSS tubes must not be driven on full carbon rims and not for rim brake and not for rim brake.
Size: 559 mm
Width: 20-25 mm bzw. 28-40 mm
Weigtht: 91 gr. and 125 gr.
Valve: 53 mm SV (Sclaverand/Presta)
Disposal: Recycling like ordinary plastic
Scope of delivery: 1x tube + 1x rim tape !