We were introduced to wet bags back when I cloth diapered my youngest. The idea is genius, but we never had them for anything other than cloth diapers back then. Enter wet bags from Modern Makerie and now we have all the sizes and they are amazing for all the things. We use them mostly for packing and keeping things separate, especially those bathroom items that could leak. They are also wonderful for swim, or gym bags when you could be bringing home wet things. They have so many uses.