Cool Mailer, envelope form with options of flap and adhesive tape and made with a combination of metalized films, foam and air bubbles, provides thermal protection solution for small-sized temperature-sensitive goods and perishable products in a lightweight pouches for short term carriages. This lightweight and flexible material saves space on shipping, while the cushioned bubble lining shields the shipment from possible damage. The thermal value of the material helps to prevent spoilage of the shipment, while maintaining a desired temperature. The bags are heat sealed at the seam to prevent bursting under normal shipping processes.