AMZ Thermal Insulated Bubble Mailers 8\ x 11\
- ... heat shield can resist three basic heat transfer modes: Conduction: By putting two opposing surfaces together, heat can be transferred from one source to another. The denser the object, the more conductive it will be. Radiation: Our foil can reflect up to 97% of the surface energy. The combination of 3 specific co-extruded layers can meet the most severe challenges. Finally, to provide you with the best quality service..