Keep your packages cold with these Thermal Bubble Mailers. Measuring 8″ x 11″ , these rectangular mailers feature a self-seal closure to keep your contents fresh and secure. The silver color adds a sleek touch to your packaging. These insulated mailers are perfect for business and industrial use, as well as for personal packing and shipping needs. The 5-pack ensures that you have plenty of mailers on hand for all your cold shipping needs. Get yours today and keep your packages chilled until they reach their destination.