The purpose of a dunnage air bag is to secure the cargo and create a bulk head during transit. That can be a sea container, a rail car, a truck, a vessel or inter modal.

The dunnage bags will be fitted into the gaps or void between the cargo and then carefully filled with compressed air.

Kraft paper air bags are rigid, solid and strong due to the multi-layer technique. Their performance level is classified in this 4 categories.