This is not a joke, this is one of the most well known pillows for quick power sleep. It offers you a micro environment in which you can take a warm and comfortable power nap at ease.  It has soothing cave-like interior that shelters and isolates both your head and hands. You can use it  at your desk, on a bench, on the train or while you wait at the airport to catch a flight. Do not care how other people perceive you, important is that you get a quality power nap so you can then continue with whatever you were doing.