Eliminating the Thermal Gap
“Most pharmaceuticals have to stay between 2°C and 8°C,” Griffin says. “Reaching 0°C causes flash freezing. which changes the compound and inhibits the medication, destroying biologics. And the destroying biologics. And the same thing to go above 8°C. It can end up being toxic.” When refrigeration access is compromised and ambient heat intensifies, those parameters become harder to maintain — and far more consequential. Coldkeepers designs around that reality without relying on powered refrigeration systems that add cost and complexity.
A defining differentiator for Coldkeepers is its globally patented one-piece construction.
Traditional EPS coolers rely on separate lids and multi-piece assemblies. Seams shift. Small inconsistencies accumulate. “We have a global patent on one-piece construction,” Griffin says. “All six sides of a box are completely sealed. There’s no thermal gaps.” By eliminating seam variability, the system stabilizes internal conditions across long-haul routes and changing climates.
Performance is validated both in environmental chambers and in field testing.
Extreme Insulated Mailers • Thick padded mailers cushion and insulate up to 36 hours* • Metallic thick foam with metallized PET exterior • Multiple closures available: tape, zipper and slider • Film FDA Compliant for incidental food contact • Custom sizes available upon request
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