Insulated Envelopes

Insulated Pouches

CooLiner insulated pouches are IPC’s intermediate performance thermal mailers for shipping flat or small sized heat or cold sensitive goods requiring thermal protection.

In the event your payload size exceeds our thermal envelopes or is smaller than the dimensions of our thermal pallet covers, IPC 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 from the ambient temperature throughout the cold chain distribution system.

CooLiner thermal pouches can be filled with your temperature-sensitive goods and sealed with an advanced adhesive strip in a matter of seconds. Our insulated pouches provide the easiest methods for shipping your small-sized items.

Suggested Sizes

8” x 10” x ½”
11” x 13” x ½”
14” x 17” x ½”

14” x 19” x ½”
18” x 22” x ½”
20” x 24” x ½”

Custom Size – Don’t see the dimensions of insulated mailer you’re looking for? We specialize in manufacturing custom sizes to fit your exact specifications. Get in touch to discuss your requirements.


  • Over 24-hour protection
  • Prevents moisture “sweating” on product
  • Peel-and-Seal adhesive lip closure
  • Clean and professional presentation
  • Good for flat products
  • Suitable for small food items, medical items, and other temperature-sensitive items
  • Leak-resistant
  • Raw materials approved by the FDA for incidental contact
  • Use with GelTech Gel Pack for maximum performance
  • One Piece, easy drop-in bag design
CooLiner Insulation Diagram

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

Performance Testing

Refrigerated Product – 48-Hour Transit in Summer

Insulated Box Test
Box Size:
ID Size:
Container Used:
Container Compared to:
Weight Shipped
Pre-Shipment Temp:
Refrigerant Used:
3 lbs. Foil-Wrapped Gourmet Chocolate
10” x 10” x 10”
10” x 10” x 10”
Carton Lined with CooLiner Box Liner
10” x 10” x 10” Carton with 6 pcs. ½” Styrofoam Inserts
8 lbs.
55 °F
1.5 lbs. (1 gel pack at 1.5 lbs)

Want to know more about our Insulated Box Liners?

Call us, we are here to help:

310 638 0900

Related Products

Insulated Pouches
GreenLiner Insulated Pouches

These self-inflating insulated pouches arrive in patented large compression sleeves and inflate when removed from the sleeve.

CooLiner Box Liner
CooLiner Insulated Box Liner

The CooLiner box liner is a simple, easy-to-use insulation bag, made of environmentally friendly materials and collapsible for easy shipping. It’s recommended for protecting carton-sized shipments lasting up to 24 hours at refrigerated temperatures.