This alternating-pressure inflating seat cushion stimulates circulation and alleviates pressure points in your posterior and legs. Twelve integrated air bags inflate and deflate intermittently, aiding circulation through areas of soft tissue that receive insufficient blood flow during prolonged sitting. The air bags disperse weight evenly across your posterior, relieving point-of-contact pressure and helping to prevent blood vessel and capillary constriction that can cause discomfort. A tethered remote allows you to select three different intensities or isolate the inflation to the front or back of the cushion. Powered by either the included AC or DC adapters, the cushion fits in nearly any chair and is ideal for long road trips, those with sedentary jobs, or someone who is wheelchair bound. 2 3/4" H x 17" W x 18" L. (4 lbs.)