Step 1
Insert
Load your item — add a gel pack for longer temperature stability.
Cold chain packaging solutions
Protect temperature-sensitive shipments with packaging built for the cold chain
K2 Cold Chain designs and distributes insulated mailers, box liners, pallet covers, polyurethane shippers and gel packs. Our Pop Up Pouch® inflates to six times its size when pierced — up to 1⅜ in of foam, no Styrofoam, and one truckload of packaging condensed to three pallets.
87% smaller than EPS4 stock sizescustom printMade in the USA
6×
Foam expansion when pierced
87%
Smaller shipped than EPS coolers
3
Pallets per truckload of packaging
1–1⅜in
Expanded foam wall
How it works
Pierce it, and watch it do the rest.
No tape, no molding, no bulky inventory. Insert the product, seal the self-adhesive strip, puncture it with a pen — the vacuum foam lining expands to six times its size and forms itself around your payload.
Step 2
Seal
Close it with the self-adhesive strip. No tape required.
Step 3
Puncture
A small puncture with a pen is all it takes.
Step 4
It expands
The vacuum foam lining inflates to six times its size, forming to your product.
Packaging solutions
Five product families, one cold chain
Pop Up, Kool Green, Eco-Shield, polyurethane and gel packs — specified together so the payload holds its range end to end.
Pop Up
Pop Up Pouch®
An integrated expanded-foam pouch for products that don't need a cardboard box. 1 in or 1⅜ in of foam, four stock sizes, custom print available.
WHAT MAKES IT DIFFERENT
Kool Green
Kool Green Box Liners
100% recyclable PET with no adhesives, paper or PVC — 2-piece sets, custom die-cut 1-piece liners and an Kool Green Mailer.
SEE THE RANGEPHOTO NEEDED: Kool Green Pop Up Pouch, flat and expanded
Kool Green
Kool Green Pop Up Pouch®
The proven protection of the original in 1½ in or 2 in expanded PET foam — a more eco-friendly pouch in the same four stock sizes.
SEE THE RANGEPHOTO NEEDED: Side-by-side — a pallet of pouches vs a truckload of EPS coolers
What makes it different
87% Smaller Than an EPS Cooler, and Tougher
An EPS cooler is bought big, stored big, and shipped big whether it is full or not. A vacuum-sealed Pop Up Pouch® is flat until the moment it is pierced — so it costs less to hold, less to freight, and takes no Styrofoam out the far end.
Space Technology
Vacuum-sealed mailers arrive 87% smaller than EPS coolers — one truckload of packaging condensed to three pallets.
Cut Shipping Costs by Half
Less dimensional weight on the way in and on the way out. The saving shows up on both freight bills.
More Sustainable Than Styrofoam
Eliminate environmentally harmful EPS coolers and boxes from the supply chain entirely.
Crushed It
Compression-tested for maximal protection in harsh handling environments.
Recyclable PET Options
Kool Green PET liners are 100% recyclable, and the Kool Green Pop Up Pouch® brings the same self-expanding protection in expanded PET foam.
Built for Sensitive Payloads
Food, pharmaceuticals and other temperature-sensitive product arrive fresh and intact.
Temperature bands
Spec'd to the Payload, Not to a Carton Size
The foam sets the baseline; a gel pack extends it. Tell us the range and the transit time and we'll tell you which combination holds it.
- Frozen −20°C / −4°F
- Refrigerated 2–8°C / 36–46°F
- Controlled Room Temp 15–25°C / 59–77°F
- Ambient — No range held
Industries served
Who ships in our packaging
- Clinical & Diagnostic Labs
- Pharmaceutical & Vaccine
- Food & Beverage
- Meal Kits & DTC
- Cosmetics & Specialty
- Veterinary & Ag
FAQ
Common questions about cold chain packaging
The K2 Cold Chain Pop Up Pouch® is a self-expanding insulated mailer. It ships vacuum-flat. Insert your product, seal the self-adhesive strip and puncture it with a pen, and the foam lining expands to six times its size, forming 1 in or 1⅜ in of foam around the payload.
Self-expanding insulated mailers such as the Pop Up Pouch® replace EPS coolers. They ship and store 87% smaller, so one truckload of packaging condenses to three pallets. For recyclable options, Kool Green PET liners are 100% recyclable, and the Kool Green Pop Up Pouch® uses expanded PET foam.
We spec packaging to four bands: Frozen (−20°C / −4°F), Refrigerated (2–8°C / 36–46°F), Controlled Room Temp (15–25°C / 59–77°F) and Ambient. The foam sets the baseline and a gel pack extends it. Tell us the range and transit time and we'll recommend the combination that holds it.
Vacuum-sealed mailers arrive 87% smaller than EPS coolers, so you pay less to freight packaging in, less to store it, and less dimensional weight shipping it out. Together, that cuts shipping costs by roughly half.
Clinical and diagnostic labs, pharmaceutical and vaccine shippers, food and beverage, meal kits and direct-to-consumer brands, cosmetics and specialty products, and veterinary and agriculture.
Request samples on our contact page with what you're shipping, the temperature range and the transit time. We'll spec the right pouch or liner and send free samples of every product we recommend, usually responding within one business day.
Send us your payload. We'll send you samples.
Tell us what you're shipping, the range it has to hold, and how long it's in transit. We'll spec the pouch or liner and get samples on the way—fast.
Request Samples