Elevate your cold shipping with our Kangaroo Insulated Expanding Mailers. These 9" x 11" x 1 3/8" mailers are specifically designed to maintain the temperature of sensitive items like medications and perishable foods during transit. The secure clasp closure ensures contents are well-protected against external elements, while the self-expanding feature adds an extra layer of insulation and cushioning. Crafted from high-quality, durable materials, these envelopes withstand the rigors of shipping and keep your items secure. With a bulk pack of 72, you'll have ample supply for all your mailing needs, ideal for both personal and business use. These envelopes are a great choice for pharmacies and pharmacists who are looking to ship medication to customers. Our mailers are made from eco-friendly materials, making them a great choice for those seeking to reduce environmental impact without sacrificing quality. Opt for Kangaroo Insulated Expanding Mailers for reliable protection and environmental responsibility, ensuring your temperature-sensitive shipments arrive in perfect condition.