Always let your garment air dry after use. Never sun-dry it or put it directly in contact with a heating source as it could lead to a premature discolouration or irreversibly damage the waterproof membrane of products featuring this membrane.
Do not store your shoes in a bag nor in an airtight container.
Clean your shoes on a regular basis (once a month) with a brush, a damp sponge, and mild detergent (i.e. household soap). Let air dry.
You can use a waterproofing spray on your shoes as it makes the material more resistant to water as well as to dirt.
