It is really annoying that these are both unique and unstackable. Later on they should eliminate the *Rare* and *Unique* off of them, make them stackable, and add one for battle. Also add the Bonus SP limit to the tool tip (or just make it last its full duration . . . .). If all of the above are done + full duration instead of SP limit, the duration doesn't have to be 3 hours if we can carry more than one at a time.