Frio Individual Cooling Wallet for Insulin Pen – Water-Activated Evaporative Cooling in 5 Colours

Frio Individual Cooling Wallets are the world's most trusted insulin cooling solution — used by diabetics in over 100 countries. The wallet uses an innovative evaporative cooling system: simply soak in cold water for 5–10 minutes, and the polymer crystals inside absorb and hold the water, creating a sustained evaporative cooling effect that keeps insulin between 18–26°C for 45+ hours — no ice, no electricity, no refrigerator required. Ideal for single insulin pens. Available in Black, Blue, Green, Purple, and Red.

• Keeps insulin at 18–26°C for 45+ hours after soaking in cold water
• No ice, no electricity — water-activated evaporative cooling only
• Ideal for single insulin pen carry
• Reusable indefinitely — re-soak to reactivate
• Available in Black, Blue, Green, Purple, Red

Frequently Asked Questions

How does the Frio Cooling Wallet work?

Frio wallets contain a polymer crystal matrix in two inner panels. When soaked in cold water for 5–10 minutes, the crystals absorb water and swell. As ambient temperature exceeds the inner cooling threshold, the crystals release water vapour through the outer fabric via evaporation — cooling the inner compartment below ambient temperature. This evaporative cooling process maintains the interior at 18–26°C for 45+ hours and can be reactivated indefinitely by re-soaking.

What temperature must insulin be kept at?

Insulin manufacturers recommend storing in-use insulin (opened) at room temperature (below 25–30°C depending on product) for up to 28–30 days. However, in hot weather (above 30°C) insulin begins to degrade rapidly. The Frio wallet maintains the temperature within the 18–26°C range even in extreme heat (tested to 37.8°C ambient), protecting insulin from heat-related degradation during travel, outdoor activities, and in hot climates.

How often do I need to re-soak the Frio wallet?

In hot conditions (above 30°C), re-soak every 24–48 hours to maintain cooling. In cooler conditions, the wallet may last up to 45+ hours before needing reactivation. Carry it in a well-ventilated area rather than sealed in a bag — airflow enhances the evaporative cooling effect. Never store in a plastic bag while in use.

Does the Frio wallet replace refrigeration for insulin storage?

No. Frio wallets are for in-use insulin (a pen you are actively using). Unopened spare insulin should still be refrigerated for long-term storage. The Frio wallet is for day-to-day carry of your current pen during activities, travel, and work — it bridges the gap when refrigeration is not available.

What colour should I choose?

The colour does not affect cooling performance — all variants use the same polymer cooling technology. Choose based on personal preference or to colour-code multiple users' supplies. Available in Black, Blue, Green, Purple, and Red.