Detailed Product Description Consist of one or two layers of air bubble sandwiched between layers of aluminum foil Characreristics: The bubble contains an air retention layer designed to provide increased strength and puncture resitance and provide a greater reduction of heat transfer. The aluminum foil is an effective barrier against moisture,air currents and vapors. Aluminum foil reflective insulation,which can reflect up to 97% of the radiant energy that strikes it,has proven to be an outstanding radiant heat barrier. Keeps summer heat out and winter heat in so to help keep house cool in the summer and warm in the winter Application: Can be used in residential construction in attics,walls,ceilings,and radiant floor heating applications,Also used in industrical/commercial buildings,agricultural buildings,and warehouse Types: Al/Bubble/AL Al/Bubble+Bubble/AL