Some passengers on long haul flights might be susceptible to develop potentially fatal deep vein thrombosis. Aircraft seat designers have been researching means of reducing such risk by modifying aircraft seat cushioning. Such improved cushion would reduce pressure on the back of passengers' legs compared to pressure exerted on the same body area by traditional design cushions.

 

These foams offer high comfort and have excellent flammability ratings. By combining the standard graphite foam with a therapeutic LR type foam which is also rated to  FAR flammability standards, it has now been possible to design a seat that exerts reduced pressure on the back of the legs of passengers, thus reducing the exposure to the risk of DVT.