Self-adhesive Black Air Coumn Bag -Patented non-printing air valve -Ships flat, stores flat, and inflates on demand -Requires significantly less storage space than traditional bulky materials -Enables consistent protection and cost from pack to pack -Reduces overwrapping -Easily identify the item inside -Simple operation, improve packing efficiency and save labor costs -Black film provides benefits such as privacy, shading, and light avoidance. -Uninflated closure for easy posting of courier manifests.