Active Alternating Air Pressure Bottom Massage CushionComputer Controlled Pressure Management The cushion contains two air bladders. Each bladder has six tubular projections that look like fingers. The bladders extend across the whole cushion from side to side and interlace like the fingers of two hands. The right hand bladder connects to the pump on the right side of the cushion and the left hand bladder on the left. Both bladders support both the right and left sides of the sitter. A programmed microprocessor directs the pump to move air in and out of the bladders. They swell and deflate in a four step cycle.
Both bladders are connected and at equal pressure. You are now sitting on air with equal pressure everywhere for four minutes.
Both bladders are connected again at EQUAL pressure. You are again sitting on air for four minutes.
The left hand bladder swells up and the right hand bladder deflates. The part of your bottom that was under pressure in STEP 2, is now under no pressure at all. Blood flows freely into it's tissues for another four minutes. 
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