TRAVELFirst look: United's new Polaris business class cabinUnited unveils the new custom seats that it will install in its new international business class cabins. The new service, called Polaris, will debut on Dec. 1.Charisse Jones, USA TODAYUnited's new custom designed lie flat seat extends up to six and a half feet and includes linen from Saks Fifth Ave. Pajamas are included for flights longer than 12 hours.Charisse Jones, USA TODAYUnited's new international business class will include slippers, cooling gel pillows and products from Saks and Cowshed.Charisse Jones, USA TODAYRendering of a lie-flat bed in United's new Polaris class.United AirlinesRendering of a seat view in United's new Polaris cabin.United AirlinesRendering of United's new international business class cabin.United AirlinesRendering of the new international business class cabin coming this December to United's fleet.United AirlinesRendering of night view in Polaris cabin.United AirlinesRendering of a Polaris lounge, coming to nine U.S. airports for United international business class fliers.United AirlinesRendering of a buffet spread at a United Polaris airport lounge.United AirlinesAppetizer to be served in United's international business class cabin.United AirlinesA main course to be served in United's international business class cabin.United Airlines