Do you ever get worried that the last bottle of your favorite beer will be drunk by an unknowing party guest? Worry no more! The bottle lock is a one-piece, snap-on, lockable device that can be placed onto beer bottles to discourage your honest, but misguided, party guests. When placed on top of a bottle, the bottle lock clearly labels your prized stash as "Private." You can place a 4mm padlock through the provided hole as an added deterrent. The bottle lock can be printed without supports in PLA with an infill of 10%.