No more will your trousers flap into the chainring, getting oily and torn, as long as you use the Velcro Doowah trouser band from Zefal. Keep your jeans or trousers clean and in one piece with this quick and easy to use solution. The velcro strap take just seconds to fit or remove, meaning you can ride along without your trouser leg getting oily or torn to shreds by your chainring. Sold as a pair.