Meant for automated packaging with integral heat tunnels for a bull's eye closure. Our single wound 27" x 2500' 2.5 mil Shrink Bundling Film is used in automated packing heat tunnels for precisely securing heavy, irregularly shaped packages like a case of water bottles, canned goods, or for bundling objects like firewood. Shrink Bundling Film is made of a 3-layer polyethylene and provides superior clarity, tensile strength, and puncture resistance. This 27" wide Heat Shrink Film with .0025 gauge heat shrink film is made in the USA with 100% renewable energy from sources like wind and solar power, and it is recyclable.