These OXO POP containers are awesome!  They're a great way to store things in my pantry because they're easily stackable and their shape means they can be closely packed.  This particular container seems very specifically designed to keep brown sugar soft, but I much prefer to put brown sugar in larger containers that this one, so I stored some dried edamame in it instead--a great way to make snacks easily accessible to my kids and make sure they'll always reseal them when they're done.  The added "dryer" feature on the top means even more of the container volume is unusable for storage, so I'd only recommend buying this one if you really want that part.
The container came with instructions on how to take apart the gasket seal on the top so that all the parts can be washed.  The instructions were very easy to understand.