Designed for commuters and travelers, this fender will help you and your followers to stay clean on the road. There is actually no many product on the market that fits great with bike racks. The one I create take advantage of the bike luggage rack. Using a simple folding trick that I've learn doing some packaging, you can make a light, strong and effective rear mudguard !
Plastic sheet, I bought 2 chopping mats at the dollar store for 1.50 $ and that's the biggest expend of the project. It looks like PETG but I'm still not sure about this. The important thing to look for is the ability of folding the plastic without breaking it (polymer toughness). I was looking for a black plastic but I still didn't find anything available in small quantity in stores, that's why I decided to go for these transparent chopping mats.