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.
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 ridden on full carbon rims The tube not using for rim-brake.
Size: 451 mm
Width: 28-38 mm
Weigtht: 70 gr.
Valve: 53 mm SV (Sclaverand/Presta)
Disposal: Recycling like ordinary plastic
Scope of delivery 20-25 mm: 1x tube + 1x rim tape !
Scope of delivery 28-38 and 32-50 mm: 1x tube