Endurabubble tri-web consists of DurabubbleRP with a sheet of polyethylene laminated to the top of the bubble. The result is a very strong cushioning and surface protection product that provides additional puncture resistance and bubble integrity. Endurabubble has a superior burst strength. The bubble withstands pressure and abuse, giving maximum product protection. Endurabubble has tacky film surface so the product remains stationary when packed during shipment.