Stratoliner Hat - CaribouA true American Icon, the Stratoliner Hat from Stetson comes with a legendary backstory. In 1938, the Boeing Model 307 Stratoliner entered the skies as the worlds first and only aircraft with a fully pressurized fuselage, allowing commercial passengers to travel in luxury well above 20,000 feet. The spacious, premium passenger jets had air conditioning, heating, reclining seats, sleeping berths, you name it. Howard Hughes even bought one of his own