Every site iv'e seen says Calicot. Might be some propriety form of calico made by veloflex ?
i can't see Calico being puncture resistant at all.
http://www.bikemania.biz/Veloflex_Servizio_Corse_Tubular_p/veloflex_servizio_corse.htm
http://www.veloflextires.com/
@Dylan started
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Every site iv'e seen says Calicot. Might be some propriety form of calico made by veloflex ?
i can't see Calico being puncture resistant at all.
http://www.bikemania.biz/Veloflex_Servizio_Corse_Tubular_p/veloflex_servizio_corse.htm
http://www.veloflextires.com/