The QOOL box achieves its impressive thermal insulation performance through the use of vacuum insulation panels that are installed on all sides, in the lid and in the base of the box. In combination with the QOOL Temperature Elements, the temperature inside can be kept constant for several days. The box can be opened several times without any problem, as long as the lid is closed in such a way that no air exchange takes place.

In combination with our Temperature Elements, the QOOL cool box enables the precise setting of specific temperature ranges such as the refrigerator range from +2 °C to +8 °C or the freezer range from -20 °C to -10 °C. We can keep these temperature ranges constant for up to 10 days.

Compared to standard ice packs, which are often filled with water, our Temperature Elements offer improved performance. Conventional ice packs give off a temperature of around 0 °C when defrosting, which is already too cold for some applications and foods. However, our Temperature Elements are able to maintain the required temperatures and thus enable longer cooling of up to 10 days without electricity. Depending on the needs and requirements of the cool box, other ice packs can also be used in the box.

The same applies to ice cubes, as they are also made of water and are at around 0 °C when thawed. As the QOOL Box was specially designed for use with Temperature Elements, it does not have a drain for meltwater. If ice cubes are used for cooling, we therefore recommend using a bag or similar container to collect the meltwater.

Thanks to specially developed PCM recipes, the QOOL Temperature Elements are suitable for various temperature ranges. All ingredients are harmless and suitable for use with food.

• Standard Frozen (-20 °C to -10 °C) | For transporting all frozen foods and perfect for ice cream.
• Standard Cool (-2 °C to +2 °C) | Particularly suitable for sensitive refrigerated goods such as fresh fish and meat.
• Controlled Fresh (+2 °C to +8 °C) | Suitable for storing fruit, vegetables, dairy products, drinks and temperature-sensitive medicines.

Standard Frozen (-20 °C to -10 °C) Please freeze the Temperature Elements in a freezer/chest freezer at a temperature of at least -18 °C for at least 72 hours. Remove the Temperature Elements from the freezer/chest freezer. The inside of the elements should now be solid. The Temperature Elements are immediately ready for use and can be used with the QOOL Box.

Standard Cool (-2 °C to +2 °C) Please freeze the Temperature Elements in a freezer/chest freezer at a temperature of at least -18 °C for at least 12 hours. Remove the Temperature Elements from the freezer/chest freezer. The inside of the elements should now be solid. The Temperature Elements are immediately ready for use and can be used with the QOOL Box.

Controlled Fresh (+2 °C to +8 °C) Please freeze the Temperature Elements in a freezer/chest freezer at a temperature of at least -18 °C for at least 8 hours. Take the Temperature Elements out of the freezer/chest freezer. The inside of the elements should now be solid. The Temperature Elements are immediately ready for use and can be used with the QOOL Box.

• For the QOOL Box M, which can cool for up to 10 days without power, we recommend the maximum configuration with four temperature elements of the same size (1 liter). Place one element upright on either side of the handle and place the other two elements on top of the food. The top two elements have the greatest effect, as cold air sinks downwards and flows through the entire refrigerated item. If you're only traveling for 3-5 days, two of the four temperature elements are sufficient. These can then be conveniently placed to the side, but for optimal cooling, they should be placed on top of the refrigerated item.

• For the QOOL Box L, which can cool for up to 10 days without power, a surround system (cooling cube) with 6 temperature elements is ideal. There are two different element sections: 2 square elements (for the base and lid) and 4 side elements. Place one of the large elements on the base of the box. Then add the 4 side elements with the straight side facing the respective wall. Finally, simply place the lid on top. Again, not all elements are necessary for 3-5 days.

As an alternative to the QOOL Box L, we offer a set of six small elements originally designed for the QOOL Box M. By correctly positioning the temperature elements, you can maximize the cooling performance of the QOOL Box and keep your food optimally fresh, whether you're traveling for a few days or up to 10 days.