An article is provided that is attachable to the interior surface of a garment collar to protect against perspiration, sweat, makeup, and the like, from the wearer’s neck. The seacock plug includes a rubber bellows assembly; o-ring flange assembly, sealing wedge, and compression lead screw with T-handle that forms a watertight seal around the irregular interior shape hull fitting. The sensors and the actuators are connected to a remote IO unit, which is connected to the control unit via a communication network. A set of symmetry axes may be identified based on the symmetrical features. The display includes two or more layers stacked together, at least one of the layers being an absorbing polarizer having a double pass color shift of x0.