According to the outer bag materials different , Dunnage air bags divide to the kraft paper bag and pp woven bag

1.  PPW(water proof) dunnage bag is tough and reliable , is a high strength pp woven cloth , tough and stone not affected by rain , so it is called waterproof dunnage air bag

2.  Kraft paper dunnage bag outer bag  is made by  PA and PE materials

Both the kraft paper dunnage bag and the PP woven dunnage bag are made of PA and PE