Add suede to a fender bib in.
The leather I use on the products I make, should not scratch the bike. However many have asked to have soft suede added to the back, just in case.
I thought about doing felt but I’d prefer to use something that will last a lot longer for you and is a much higher quality.
If you don’t see the color of stitching you would like just send us a message and we will get it for you.