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A camper staple! Amazing cold retention that can even freeze fish! Colder than a refrigerator.

Maintains a surface temperature of -16℃ for a long time! Approximately 8 times the cooling capacity of regular ice packs! Soft type

The amazing cooling capacity that can freeze even fish is still there in the soft type. The surface temperature is -16℃, and the cooling capacity is approximately 8 times that of regular ice packs (our experiment). Just leave it in a home freezer for about 36 to 48 hours and it will be useful in various outdoor scenes. For things you don't want to freeze, such as vegetables, wrap them in newspaper.

Preparing for power outages and disasters
It is also useful as a preparation for sudden power outages and disasters.

Made in Japan, safe and secure, using natural materials.

The contents are made of natural plant-based materials, and are made in Japan, so you can rest assured.

*There are individual differences in viscosity due to the characteristics of the material, but there is no problem with performance.

Total weight: (approx.) 550g
Size: (approx.) 19.5 x 13.7 x 2.8cm
Main material: [Container] Polyethylene
[Contents] Natural plant polymer
Precautions for use
- When using, be sure to set the dial of the freezer to the highest setting and freeze completely until it becomes a frozen mass.
Please note that if the temperature inside the freezer does not reach -20 degrees, it may not freeze.
- If it is difficult to freeze even with the dial set to the highest setting (below -20 degrees), empty the freezer almost completely before freezing.
- It takes about 36 to 48 hours for the freezer to freeze into a frozen mass, but in rare cases it may take more than 48 hours depending on the model, performance, and conditions of the freezer.
- Do not stack sub-zero packs when freezing them, as they may not freeze.
- If you put them together with vegetables or other items that you do not want to freeze, wrap the sub-zero packs in newspaper or something similar and use them at a distance.
・Please do not use the product in a soft cooler with aluminum vapor deposition on the inside.