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Introducing the Penguin Mailer!

Protect your temperature-sensitive products from costly damage during distribution and storage with Coldkeepers’ new Penguin Expanding Insulated Mailer. This innovative insulated envelope arrives in a compact, compressed form of approximately 0.5” thick, expanding to nearly 3” when activated, eliminating the need for an outer carton. To use, simply load the envelope with your PCM refrigerant and temperature sensitive items, seal it with the included tamper-resistant, pressure-sensitive tape and leak proof zipper closure, puncture and apply your shipping label.

Features and Benefits:
✔️ Saves space in your warehouse
✔️ Doesn’t require an outer box
✔️ Never requires void fill
✔️ Adapts to variably shaped products
✔️ Expands to a form-fitting insulating cocoon
✔️ Tamper-evident attached adhesive strip
✔️ Filling the envelope is fast and easy
✔️ Increase efficiency
✔️ Reduce freight costs

The envelope features a 1 3/8″ foam layer sealed within a high-quality, durable 4.5 Mil metalized liner that ensures strength and integrity when used with PCM refrigerants. The foam offers critical cushioning, form-fitting crush resistance in addition to its superior thermal insulation properties.