How to clean footwear
In general Bates recommends the following guidelines for cleaning the footwear:
Cleaning: on a regular basis, brush away any surface dirt with a soft brush. After extended, rugged use, wash with mild soap and warm water. Be sure to rinse all soap off as it is hydrophilic.
Drying: open footwear fully, remove the insole and laces and dry at room temperature. Never expose to heat!
Conditioning: recommended treatment depends on construction and materials of the footwear (most treatments do alter color and appearance).