TWO IDENTIFICATION STICKERS (NOT APPLIED) - PROTECTIVE QUIST BOX WITH SECURITY SEALnSuper Strength 2mm Durable construction - 3u0026#34; Wide x 2½ u0026#34; Long x 1u0026#34; HighnVentilation holes hidden behind back hinge!nEvery Design is UNIQUE u0026amp; Looks AwesomenYou can use this for your orthodontic retainer or your sporting mouth guard. It is an amazing piece of plastic that is attractive and durable.