CooLiner Insulated Envelopes

Easy to use, environmentally friendly and cost effective insulated envelopes.

Insulated Envelope CooLiner

CooLiner insulated pouches are lightweight thermal mailers designed for shipping flat or small-sized temperature-sensitive goods.

The thermal pouches can be quickly filled with your temperature-sensitive goods and sealed with an secure adhesive strip in a matter of seconds. Our insulated pouches provide the easiest method of shipping your small-sized items.

Made of recyclable #7* CooLiner material, these insulated bubble mailers are made using a combination of an internal bubble layer and a reflective outer layer which work together to provide reliable temperature control.

In the event the size of your payload exceeds the capacity of our thermal envelopes, our insulated box liners fill the need to ship “smaller than a pallet but bigger than an envelope” shipments with a guarantee that the temperature of the products being shipped remain largely unchanged throughout the cold-chain distribution system.

*May not be recyclable in your area

Custom sizes and minimum order quantities

We can provide custom sizes to suit your exact requirements at no additional cost. Get in touch to discuss your requirements.

The minimum order quantity for Insulated Pouches is 1000 sets/pcs per size. Learn more about our minimum order quantities here.


  • Protection for over 24 hours

    The thermal envelopes provide effective temperature control for over 24 hours.

  • Leak-resistant design

    Prevents moisture ‘sweating’ on product.

  • Easy and quick to use

    Instantly seal the one-piece thermal pouches with the Peel-and-Seal adhesive lip closure.

  • Clean and professional presentation

    Stay aligned with your brand image.

  • Ideal for flat products

    Perfect for small food items, medical supplies, and other temperature-sensitive items.

  • Raw materials approved by the FDA

    In cases of incidental food contact.

  • Use with refrigerant gel packs

    Enhance the performance of your insulated bubble mailers by using it in conjunction with our cold packs.

Available in Various Thickness

Our insulated mailers are available in various levels of thickness that are offered depending on your performance requirements.


More streamlined for reduced costs.

CooLiner Lite

Single Bubble

Suitable for shiments lasting 24 hours.

Double Bubble

Dual bubble layer provides 20% better protection.

CooLiner Double Bubble Diagram

Watch the demonstration video to find out how quick and easy it is to use CooLiner insulated pouches.


What is CooLiner?

Made with a combination of metalized films and air bubbles, CooLiner material is an innovative type of insulated packaging that effectively protects shipments against extreme ambient temperatures.

Lined with a silver bubble wrap, these pouches give you all the flexibility you need. They are available in any custom size, and they can be filled and sealed in seconds.

Also available as a box liner, pallet cover or cargo blanket, CooLiner is recommended for protecting shipments for durations lasting 24 hours.

How does CooLiner work?

Our proprietary insulation technology, exclusively available at IPC, perfectly combines heat reflection and mass. In comparison to similar materials with a higher relative thickness, CooLiner provides superior temperature control.  It is the dual performance of the reflective outer layer and low thermal mass that allows CooLiner to outperform other similar products.

Reflective Foil Layer

The foil outer layer serves to prevent heat from radiating into the shipment. This works using the properties offered by this aluminized layer that allow it to receive and bounce away heat energy at a subatomic level.

Advanced Bubble Layer

With a unique structure carefully designed to inhibit conductive heat flow, CooLiner material can provide superior thermal protection to even thicker, heavier films.

The result of 11 years of research and development, our bubble insulation technology has, time and time again, proven to provide real-world efficacy.

Why is the CooLiner superior?

Unparalleled performance.  It provides a level of temperature control unparalleled in the industry.

Reduced operational costs.  CooLiner helps you to keep your work area efficient with quick and easy application. Another benefit is that CooLiner can be compactly folded away when not in use, providing valuable savings in warehousing and shipping.

Durable, puncture-proof and water-tight. CooLiner material is safeguarded against rips during transit, allowing you to rest assured your shipments will reach their destination without damage.

Performance Testing

Refrigerated Product – 24-Hour Transit in Summer

Details: 12 lbs. of chilled gravy
Box Size: 12.5″ x 10.5″ x 8″
ID Size: 12.5″ x 10.5″ x 8″
Container Used: Carton lined with CooLiner Box Liner
Container Compared to: 12.5″ x 10.5″ x 8″ with 6 pcs. 1.5″ Styrofoam Inserts
Weight Shipped: 10 lbs.
Pre-Shipment Temp: 2 °C  (~35 °F)
Refrigerant Used: 2x 28 oz. gel packs

Related Products

Paper Insulated Pouches

CelluLiner Pouches are high-performance insulated pouches made entirely of curbside-recyclable materials. With a 100% paper construction, CelluLiner pouches protect shipments against even the most extreme ambient conditions.

PopupLiner Insulated Pouches

Self-inflating insulated pouches that arrive in patented compression sleeves and automatically inflate to full size when opened.

All our products are developed and manufactured from our factory in the USA.

Want to know more about our Insulated Pouches?

Call us, we are here to help:

310 638 0900