Quadtro Select Wheelchair Cushion 16 x 20 X4.25 #N A 5 699 mm Legs Closed MSHQ 1885 5 699 mm Legs Closed Internal Width 23 The angle of incline can easily be adjusted to 10¯ 15¯ or 20¯ as advised by a healthcare provider * Patented hand pump makes it easy to increase or decrease traction force * A quick release button is conveniently located next to the high quality guage on the hand pump * Pushing the quick release button allows the user to either lower the force to attain proper traction or release the traction force completely * Contouring memory foam headrest cradles the head for maximum comfort throughout your treatment * Forehead strap assures a comfortable and appropriate fit during treatment * Two adjustable clips on the back of the unit allow each wedge to be moved in or out to provide a custom fit * * 3 year limited warranty