You have been wandering through the city offroad and this is what your AEVOR looks like?
We tell you how to clean it up again:
Take a rag or a sponge (please use the soft side) dipped in lukewarm water and rub gently over the dirty parts. Important: Please do not use soap! Depending on the model, the outer material of your AEVOR is sensitive to soaps, so that upper layers of fabric may come loose.