Thermal mailers are the ideal way to protect your perishable items during transit. These light-weight insulated mailers are made from a durable, moisture resistant, multi-layer blend of co-extruded polyethylene film. The exterior film is laminated to a unique insulating lining that not only keeps your perishable items fresh, but also protects from damage. The bright white exterior film creates the professional image you are looking for and our pressure sensitive self-seal adhesive closure system is reliable, tamper-evident and easy to use. This is the perfect mailer for laboratory specimens, pharmaceuticals, perishable food items and most other temperature sensitive product.