Oh wait, I thought we were referring t a certain type lol, my hardest to close is my Clear Tigrerra 580g, it barely stays shut and if you roll it it pops open before it gets to the card lol…
That one is easy...I had one that wouldn't stay closed though. All I did was open it up, and fix it. There was some extra plastic in the way, so I cut it off. ;D lol