A stick went right into it and dragged up a bit causing a brown streak on the mesh part of my sneaker. To make it worse I decided to try to wipe it off with some napkins and a dab of water that were sitting around… but the napkin must have had some die of some sort… so now there’s this color smear.

Do you know anything that might could help restore some of the whiteness?

Thanks for any help.
Thanks so far, forgot to add however that there are sections of the shoe that are suede… so I can’t really wash em? Unless I’m wrong about that…