Well I wanted to put a mud flap on my bike but did not want to drill through my polycarbonate Freddy Fenders for fear of damaging them. So I spotted some velcro with adhesive backing at work along with some rubber mats that truck drivers throw away stacked in a pile and it all came together. I cut a swatch 11" long, 3" top & 4" at the bottom, placed the velcro on the inside of my front fender & on the top of my mud flap. Now I have an easily removable mud flap that I can keep in my bag and only use when needed without damaging my precious Freddys.