A new tubular in the Challenge product range which was developed with the input of Tom Pidcock. The Challenge Flandrien offers a fast rolling carcass and open tread giving it a great balance of speed and grip esspecially in muddy conditions.Use: Hardpack & MudFeatures:Latex innertubeSealed Corespun CottonHandmade for the ultimate in comfort and low rolling resistancePPS - puncture protection strip320TPI casing33mm width