Dust and mud should be removed with a brush every day. Every so often, apply a neutral or coloured shoe polish. Leave the shoes outside until they are completely dried, keeping them out of direct sunlight, which causes them to fade, and out of heaters and hair dryer, which could wrinkle them and make them lose flexibility. Avoid washing them in the washing machine, because the water risks to remove the glue between the shoes components and to deform them.