When the course conditions make a turn for the worse it is time to reach for the new Challenge Fango. It is designed to perform well in wet and slippery conditions. Challenge has engineered this new tread to handle the elements. 350 grams. 700c x 33mm. A perfect match with our Mastik Tubular Glue and and Sidewall Sealant. Absolutely no tubular may be returned that has been glued.