I downloaded a fender template off the internet, spent some time blowing it up on my copier/printer at home then cut one out of a crazy carpet (not sure if you have those over the pond or not - if not, they are a flexible chunk of plastic used for sledding on snow). Works pretty good, only downside is when I pull the front wheel off to throw my fat bike in my wagon its really easy to crimp the fender material if you set it down on the fender.