Pack of 25 Insulated Shipping Envelopes, 8 x 11 Inches. These metallic packaging envelopes help people enjoy their favorite dishes anywhere, anytime. These insulated mailing envelopes preserve the flavor, temperature, and freshness of the food. Up to 48 Hours Control. These metallic mailers offer effective temperature control. The metalized surface of the foil bubble mailer for frozen food prevents temperature loss and food spoilage. The strong adhesive strip ensures a hermetic closure. Cushioning Effect. The inner bubble layer and 180 GSM metal foil of insulated shipping bags for food ensure excellent shock-absorption. Therefore, foil shipping envelopes protect the products from impacts. Stay Dry. Waterproof bubble insulated mailers for cold shipping have a sealed design to avoid leaks. Rain, snow, and splashes will not affect the contents of the insulated mail. Cool insulated mailing envelopes are a smart alternative to lunch boxes. Applications. Metallic bubble mailers are suitable for shipping perishable food and temperature-sensitive items. Thermal mailer is ideal for the safe shipment of ready meals, medicines, and cosmetics. thermal bubble mailer pack metallic foil mailing envelopes self seal cool mailers waterproof cold shipping package insulated bags food cosmetics bag hot pouch sandwich reusable lunch pouches insulation snack aluminum box frozen boxes disposable cooler liner freezer mail coolers keep packaging envelope assorted wholesale address square padded office packing travel dvd variety sparkle decorative books heavy duty buissnes supplies valentine clothes colorful sizes cute holiday gift cushion shild metalic grade magical lined packages bulk fashion