Dunnage bag is an innovative and simple tool for the protection of transport, it is made of pp and pe film faced Kraft paper , solid and tough, inside bags are made of 5 layers pe crowded membrane. One-way valve inflated and deflated quickly, firmly closed, effective prevention of goods collision in the trucks, containers or rail transport. It can fully fill the gap among cargo/goods, support the weight result from the swagging of the cargo/goods, and absorb the shake to protect cargo from damage during transportation, better than any other protection support materials, and more environmentally than the traditional foam-filled method. Cartoon*w*h)1.2*1*1m