Employs a thin, co-extruded barrier that is 100 times more resistant to the passage of air than even a thick, single layer of polyethylene. The result is a packaging material that retains its air and cushioning power much longer and under greater pressure, than competitive, non-barrier bubbles. Air cushioning keeps products of all shapes and sizes securely in place while protecting them from shock, vibration and abrasion. Lightweight, clean and flexible. A smart alternative to loose fill.