Painted lettering on a custom made key incased in a clear plastic box approximately 2 1/2 "X 2" X 1/2" with closing latching lid.  The key is removable but is temporarily held in placed with a glue dot.

This key has been custom designed for use in most bathroom/bedroom locks, commercial or residential, which have a push button on the inside and an unlocking "pin hole" on the outside.  A photo of this type of lock is provided in the "Bundle 2" selection.