The sides are soft (cloth) so if you want something waterproof or to move I would look for something stronger, but they look nice and stack ornaments well.  We did have all plastic cases before, but they cracked and broke over the years and moves.  These work well for storing in a home, closet until the next year when needed.  I would store indoor as opposed to a garage or shed where they would get dusty and not clean as well.