I have accidentally put my damier graphite pocket organizer in the washer in college. It was my first wallet and I put it in the wash . I freaked out. I dried it off with a towel and let it air dry. The shape was intact just the inside lining part dried a little wonky (so it appeared elevated in certain parts of the card slots) but nothing noticeable on the exterior. It actually looked "cleaner". From then on I knew that canvas can withstand a little bit of rain. Obviously I will not make the mistake again or go and submerge my canvas pieces in water. But I know it will be ok if it's hit with a little rain.