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Lava Lunch is an easy and practical solution that combines timeless design with function not available in any other lunch bag - Warmth!
Our Lava Rocks are designed for maximum heat retention and outperform any other pack on the market. When heated in the microwave for a few minutes they actually absorb heat energy right from your microwave, and store it for later. Then as they begin to cool, they slowly release the stored heat energy, keeping your food warm. They are made with our patent-pending formula and can maintain heat up to 5 hours or more. This is a seriously awesome heat pack.
While our Lava Rocks can be placed in any carrying case, they were specifically designed to work with our Lava Lunch tote. For this reason, if you place our Lava Rocks in a lesser insulated, or lesser quality tote, you may see lesser results. This is because the heat is escaping the tote too quickly. We design our tote for maximum heat retention using special insulation, special design features like tightly wound zippers, zipper plackets, and high temperature heat-reflective lining.
The Lava Rocks activate with just a couple of minutes in the microwave, and can be reused hundreds of times.
For best results, microwave both Lava Rocks at one time, placed side by side on the microwave turn table. Once heated, place one Lava Rock beneath your food container and one on top, close the zipper, and leave it closed until meal time.
Each Lava Rock is 7" x 4.75" x 0.4"