text: Pneumatic bladders, known as dunnage bags, are used to stabilize cargo within a container.
  Pneumatic bladders are used in medical research.
  Leading edge inflatable kites use pneumatic bladders restrained by a fabric case; the bladder is selected slightly larger than the case, so that at operational inflation the bladder is not stressed while the case defines the final shape of the leading edge. Many of the wing's airfoil ribs are similarly bladdered.