Can't beat that.  They seem well made for plastic bags with zippers.  Each has a little attachment loop (cloth) on them to hang off stuff or keep them together.  These are great for travelers who want to easily find stuff, keep it dry and who are organizers and hate searching for chargers, hand cream and those other annoying searches!  That's me.  I wouldn't depend on them to take my good camera on a water rafting trip, but walking around China, Africa, etc, checking into airlines, perfect.  I would stash a camera in one for a sudden downpour.

FYI:  my chromebook fits in the big one without the case on it, and my nexus 7 fits nicely in one with the case on it.