Spot clean stains right away with warm water by dabbing it with a lint-free cloth until the stain begins to fade. If the stain seems to persist, add a tiny drop of non-colored soap to the damp cloth and continue to dab the stain. Always test a small area first before cleaning. If necessary, machine wash in cold water. Lay flat to air dry. When dry, iron with low heat or hang it for a few days with a towel inside to naturally remove the wrinkles. Never put the bags in the dryer. 

Please note: natural canvas is prone to stains and color transfer from rubbing against your clothing. If this is a concern, please consider the black canvas or waterproof canvas instead.