A matchmaking system and method is provided that facilitates optimization of player matches for multiplayer video games. Methods and devices for automating this process are also disclosed. The current invention involves use of a polymer in an optical device in an operating temperature range in the region above Tg, where the polymer segments between crosslinks are allowed local freedom of movement; however, large-scale movement of the material may be restricted by the crosslinked structure of the polymer material. Then, a headrest pad made of foaming resin is integrally formed with the plate bodies.