A chair, preferably a beach chair, equipped with a simple, foldable, and lightweight sun-shading device that is integrally connected with or built into the chair and, when not in use, is hidden inside the body of the chair. 5 to 1; and, working the preform so as to orient the molecular structure of the elastomer in at least one direction while transmuting the preform into a compression spring. A PPE also includes a parse unit for parsing packets to retrieve certain information and a lookup unit for accessing a control block indicating how to process an incoming packet or outgoing payload. The switching on and switching off provides heating of the breakdown path to ignite the gas mixture.