IPG | sku: 315057949 Ipg #0 - 6.5 In. X 10 In. Polyethylene Bubble Mailer Polyair's Xpak bubble mailers combine the tear, weather and puncture resistance of a courier envelope with the cushioning of a duraliner bubble lining. Each Xpak mailer is made from 100% polyethylene. Shipping/postage costs for Xpak is lower than many... Log in for pricing