It gives you nothing.......Use it to hold against your face to cool you off on a hot day. Exactly what Jordan said, they can move 780 cfm. But move 780 cfm that is already moving. They can't create atmosphere. Stupid little gimmicks.
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"Gripping the wheel his knuckles went white with desire, the wheels of his mustang exploding on the highway like a slug from a .45. True death. 400 horsepower of maximum performance piercing the night, this is Black Sunshine"