StrategyPage points out that airlines are using Skydex to protect airplanes from small bombs packed in luggage.
FlyBag is a further development of earlier blast absorbing technology. For example, after 2010 American MRAPS and Stryker wheeled armored vehicles had blast absorption (Skydex) panels added to their floors. Each 762x281x25mm panel (30x15x1 inches) weighs about one kilogram (2.3 pounds). The Skydex is actually a multilayer shock absorber that limits most of the blast shock from a bomb. Thus there are fewer casualties inside the vehicle, and troops are more quickly able to respond to the attack. The panels result in fewer casualties overall, and fewer severe injuries. The success of Skydex led to further research in the area of dealing with the many types of damage explosives inflict.
UKMail article explains it here.