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Everything You Need to Know About the Lunchbox Kits

Hot! Most meals in the HEAT.me lunchbox reach a temperature of about 75°Cwhile more liquid dishes such as soups can be up to 80°C can get hot. You have to be careful not to scald yourself. Did you know that the food in restaurants is between 60°C and 75°C?

How hot your food gets in the lunchbox depends on whether your food is solid or liquid, such as lasagne or spaghetti with tomato sauce - and whether it is cold or warm around you. If it is cold outside - for example in winter - and your food is rather solid (i.e. with little sauce), it may take a little longer than in summer for it to get really hot. 

In addition, the short-term heating up to 90°C helps to kill any "bad" bacteria that may (already) be in your food. The HEAT.me lunchbox therefore not only offers you a hot meal, but also a hygienically safe one - ideal for on the go.

No, not everything. The HEAT.me lunchbox is ideal for heating a variety of pre-cooked meals, ready meals and leftovers. Whether pasta, rice, vegetables, meat or soups - everything is heated gently and evenly without your food drying out or burning. The lunch box works particularly well with all pre-cooked dishes that can also be reheated in the microwave or oven.

You can also heat almost all ready meals and microwave meals in the HEAT.me lunchbox. However, our lunchbox is suitable for not for cooking raw foods such as raw meat or uncooked rice. So please don't get the idea of trying to cook raw potatoes in the lunchbox until soft, for example. That simply won't work.

For raw vegetables or fish that are already pre-cooked, the HEAT.me lunchbox is also a good choice for bringing the food to a pleasant temperature evenly. With the HEAT.me lunchbox, you can heat up just about anything you would heat up in a microwave - anywhere and at any time, regardless of sockets or power sources.

To summarize: Pre-cooked meals, leftovers and ready meals are ideal for the HEAT.me lunchbox. However, raw foods and foods that need to be cooked are not suitable.

The reheating time depends on the type of food and the ambient temperature.

Soups and liquid dishes are usually about 15 minutes super hot. Other dishes such as rice, pasta or solid meals require between 20 and 30 minutesto reach the desired temperature.

Regardless of the type of dish, the HEAT.me pad ensures that your meal is heated reliably and evenly.

The HEAT.me lunch box and the lunch boxes we recommend for heating a meal generally have a volume of 800 ml. It is important not to fill the lunchbox to the brim - ideally the contents should not exceed 450 g weigh. So only fill the box two thirds full. The more food you put in the lunch box, the less energy the HEAT.me pad can provide to heat the food completely and evenly.

For comparisonReady meals and microwave meals from the supermarket usually weigh between 400g and 500g. In restaurants - if you don't order a children's or senior citizen's plate - you get between 450g and 550g. These portion sizes are perfectly adequate to fill you up. So if you stick to these quantities (and don't work in construction or do other heavy work), you will definitely be full.

For larger lunch boxes or meals over 450 g we recommend that you divide your meal into several portions, if only to ensure that your food is nice and hot and not lukewarm.

So please don't get the idea of filling our lunchbox or any other lunchbox with the contents of a tin of ravioli. Although the 800 g of a tin fits perfectly in our lunchbox, it weighs too much to be heated up perfectly hot.

Absolutely, we recommend adding about 6 tablespoons of water to the food to keep it nice and juicy.

Especially with drier dishes such as rice, pasta or meat, the extra water helps to heat the food more evenly and prevent it from drying out. This keeps your meal fresh and aromatic without losing taste or texture.

The time during which you can safely store your food in the HEAT.me lunchbox depends on the ambient temperature and the time of year:

  • In winter or at cooler temperatures you can easily leave your food in the lunchbox for up to 6-8 hours before heating it. The cool conditions help the food to stay fresh for longer.

  • In summer or in warmer temperatures we recommend keeping the food in the lunchbox for a maximum of 2-3 hours without refrigeration to ensure the freshness and safety of the food. You should be particularly careful with perishable ingredients (such as meat, seafood or dairy products) and heat the food as quickly as possible or keep it very cool.

Our recommendation: buy our insulated HEAT.me lunch bag or one of our High-performance cool.me cooling batteries. This ensures optimum food hygiene and prevents bacteria from growing (and multiplying).

If your food has not got really hot, this may be due to several factors:

  1. Filling quantity of the lunchbox: If the lunchbox is too full or contains more than 450 g of food, the HEAT.me Pad may not provide enough energy to heat everything evenly. Do not fill the lunchbox to the brim and stick to the recommended amount.

  2. Consistency of the food: Firmer dishes require more time to heat up completely. With very dense dishes, it may take a little longer for the heat to be evenly distributed. Liquid dishes such as soups heat up more quickly.

  3. Ambient temperature: In cold environments, the heating process may take longer. At very low temperatures, the HEAT.me pad may need more time to generate the required heat.

  4. Not enough water used: The HEAT.me pad requires exactly 60 ml of water to trigger the chemical reaction. If too little water is used, the pad cannot achieve its full performance.

  5. Age of the HEAT.me pad: If the HEAT.me pad is damaged or old (this applies if you are reading this question in 2028), it may have lost its effectiveness. So keep the pad in a dry place away from light. This will ensure that it continues to work for years after purchase.

Check these points to ensure that everything works perfectly next time and that your food reaches the desired temperature!

Yes, you can prepare dehydrated or freeze-dried food in the HEAT.me Lunchbox, but you should add enough water. These types of food need water to rehydrate before they are ready to eat. Simply add the recommended amount of water to the food and heat it in the lunchbox.

Be sure to use the right amount of water to ensure that the food is fully rehydrated. The HEAT.me pad provides enough heat to both heat the water and keep the food evenly warm. So you can enjoy freeze-dried or dehydrated meals on the go without any problems.

No, the HEAT.me lunchbox is not designed for cooking raw food. It was developed to Pre-cooked meals or Ready meals to heat efficiently. Raw foods such as meat, uncooked rice or raw potatoes require constant, high heat over a longer period of time, which the HEAT.me pad cannot provide. For the best results, we recommend using only precooked Food or Instant meals to be used.

No, the HEAT.me lunchbox is not designed to hard-boil raw eggs. The heat generated is sufficient to warm up pre-cooked food, but not to turn a raw egg into a hard-boiled one. Hard boiling eggs requires a constant, high heat over a longer period of time, which the HEAT.me Lunchbox cannot provide.

If you want to enjoy eggs in the lunchbox, we recommend hard-boiling them beforehand and then simply warming them in the lunchbox.

No, the HEAT.me lunchbox does not reach boiling point, so water cannot be brought to the boil. However, this has the advantage that your food does not boil over and its nutrients are not lost. The maximum temperature that can be reached in the HEAT.me Lunchbox is around 95°C (203°F). This is hot enough to heat meals thoroughly, but not to bring water to the boil.

But: You can heat water in the lunchbox for tea or coffee (instant). The ideal drinking temperature for coffee is 65° C to 90° C and for tea 60° C to 65° C. You can easily reach these temperatures after 15 minutes of "boiling".

No, the HEAT.me lunchbox is not designed to cook raw food. It has been specially developed to reheat pre-cooked meals. The heat generated is sufficient to thoroughly reheat already cooked food, but not to fully cook raw ingredients such as meat, rice or vegetables.

If you want to enjoy a hot meal on the go, we recommend preparing the food in advance and then heating it up in the lunchbox.

Yes, you can easily heat normal MREs (Meals Ready to Eat) with the HEAT.me heating pad. The heating pad works in a similar way to the Flameless Ration Heaters (FRH) that are included in many MRE packs. All you need to do is place the MRE in the HEAT.me lunch box, place the heating pad underneath, add 60 ml of water and close the lunch bag with the zipper.

The heating pad generates enough heat to warm MREs safely and evenly - without any external energy source. So you can also enjoy your MRE comfortably on the go or in emergency situations.

The price of 0,99€ *For a HEAT.me pad may seem like an additional or possibly unnecessary cost factor at first glance, but when you look at the alternatives, it quickly becomes clear how favorable and advantageous the HEAT.me system actually is - especially in comparison to restaurants, delivery services or fast food outlets.

To beat inflation, you have the following alternatives to save a lot of money:

1. you have a huge selection of cheap ready meals in the supermarket

In supermarkets there is now a Large selection of ready meals and microwave meals, which on average around 4 Euro taste. Asian instant noodle soups are already available for 0,60 Euro, soup tureens for 1,50 to 2 Euro and canned ready meals for 2-3€. All these meals can be easily warmed up in the HEAT.me lunchbox on the go.

In combination with a HEAT.me pad, you only pay 0,99€ for the warm-up, which is Full flexibility when and where you want to enjoy your meal. And you even save on the cost of the food enormous amounts compared to a restaurant or delivery service.

2. you can save a lot of money with meal prepping

If you prepare your own meals and rely on Meal Prepping you save even more. With the HEAT.me system, you can heat up your home-cooked meals anywhere without having to rely on expensive restaurants or delivery services. Even the cost of fresh ingredients for a home-cooked meal is often significantly lower than a ready-made restaurant meal - and you have control over the quality and ingredients.

3. say goodbye to increasingly expensive prices in restaurants, kebab stands, fast food outlets, rest stops and delivery services

Compare the costs:

▶ You pay quickly in restaurants or service stations 10 to 15 Euro for a meal, especially for a family with two children are 40 to 50 Euro are not uncommon. In addition, there are often expensive drinks, which alone 3 to 5 Euro per person, and the expected Tip of at least 10%.

▶ Try a dish at fast food chains under 6 Euro to get. You can also get a kebab around the corner very quickly 8 Euro go. The cheapest pizza now costs around 10 Euro. None of it is even remotely healthy and you have no idea how good the ingredients of your "meal" are.

▶ Delivery services often start at 12 Euro per order, including delivery charges and minimum order value. With drinks and tips, you'll quickly reach 20 Euro or more.

4. save money with our HEAT.me system

With the HEAT.me lunchbox, you can enjoy your lunch for just 0.99€ per HEAT.me pad the ready meals you have brought yourself or bought anytime and anywhere heat up. Even if you use a ready meal for 4 Euro you buy in the supermarket, you get a total of under 5 Euro per meal - which is a huge saving compared to restaurants, rest stops or delivery services.

If you also take your own drinks with you, you avoid the expensive drink prices that are often charged in restaurants or rest stops. 3 to 5 Euro per drink.

5. you are traveling with children and don't want to incur high costs

The HEAT.me system is a real money-saving solution, especially for families. Instead of spending 40 to 50 euros for four people in a restaurant or with a delivery service, you can prepare your own meals for less than 4 Euro per person. The price of 0,99€ for a HEAT.me pad per nose is hardly significant.

To summarize:

With the HEAT.me lunchbox and a HEAT.me pad for only €0.99 you can enjoy your meal flexibly, inexpensively and independently of power outlets or expensive restaurants. Whether you use cheap ready meals from the supermarket or go meal prepping - the savings compared to restaurant visits, rest stops, delivery services or even canteens are enormous.

* There are graduated prices for the heating pads. The prices vary between €1.29 and €0.99 - depending on the quantity.

The HEAT.me pad consists of a special mixture of materials that together enable a chemical reaction to generate heat. The main components are magnesium, iron powder and salts. These materials are enclosed in a safe and stable fleece. As soon as water is added, the magnesium reacts with the water and releases heat. The iron powder intensifies this effect and helps to stabilize the temperature. The salts contained promote the chemical reaction and ensure that it takes place efficiently.

All components of the heating pad are selected to generate heat in a safe process without releasing open flames or hazardous substances. The heating pad is therefore a practical and safe method of heating meals on the go. After use, the pad can simply be disposed of as it leaves no toxic residue.

Fresh out of the protective packaging, the HEAT.me pad weighs 22g/0.8oz and after use approx. 45g/1.6oz.

Our self-heating lunchbox uses innovative technology to heat your meals on the go, without the need for a microwave or external power source. The key to this lies in the HEAT.me pad, a so-called Flameless Ration Heater (FRH). This pad consists of a special mixture of magnesium, iron powder and salts.

To heat up your meal, all you need to do is 60 ml water (normal tap, river or lake water) onto the HEAT.me pad. The water triggers a chemical reaction in which the magnesium-iron alloy reacts with the water and releases heat. This exothermic reaction heats up the lunchbox containing your meal.

The resulting steam surrounds the food, which is securely sealed in the lunch box, and heats it gently. The food is heated evenly without the risk of it burning or drying out. Your meal remains juicy and aromatic, while nutrients and vitamins are retained. After around 20-30 minutes, your food will reach a comfortable eating temperature of around 65° C/149° F to 75° C/167° F

With the HEAT.me Pad, you can enjoy your home-made delicacies anytime and anywhere - without any complicated preparations or external energy sources. It's the easiest and most effective way to enjoy hot meals on the go - stress-free and uncomplicated.

Yes, you can use both snow and seawater to activate the HEAT.me Pad. The HEAT.me Pad works with any type of water - tap water, river water, seawater or melted snow. The only important thing is that you have about 60 ml of liquid to trigger the chemical reaction. If you use snow, you should melt it first to obtain the required amount of water.

Seawater does not have a negative effect on the pad's functionality. As the HEAT.me pad already uses salts for the heat reaction, the salt contained in seawater is not a problem. This means you can easily heat your meal even near the coast or in situations with limited access to drinking water.

Yes, the HEAT.me pads are safe to use.
They are designed to provide a safe and controlled heat source without releasing open flames or hazardous substances. The mixture of magnesium, iron powder and salts is encased in a non-woven fabric that allows the chemical reaction to take place in a stable and safe environment. This material is robust and ensures that the contents remain safe while the heat is generated.

The chemical reaction is activated by adding 60 ml of water and no toxic fumes or harmful residues are produced. All materials used are non-toxic and environmentally friendly.
It is only important that you allow the HEAT.me pad to cool down completely after use before disposing of it. It can be disposed of in normal household waste without any problems.

As the pad gets very hot during heating, you should not touch it directly during the process. As long as you follow the instructions for use and avoid contact with the pad during the reaction, using HEAT.me pads is a safe and reliable way to heat your meals on the go.

No, the HEAT.me pads are neither toxic nor harmful to the environment. The materials used - magnesium, iron powder and salts - are non-toxic and environmentally friendly. They have been carefully selected to provide a safe and effective heat reaction without releasing harmful chemicals. The mixture is enclosed in a non-woven fabric that is also environmentally friendly.

After use, the pads leave no toxic residue and can simply be disposed of in normal household waste. However, it is important to allow the pad to cool completely before throwing it away. The production of HEAT.me pads follows high environmental standards to ensure that they are an eco-friendly solution for heating meals on the go.

So you can be sure that using HEAT.me pads will not endanger your health or the environment.

No, the smell you notice when heating is not toxic. This slight odor is caused by the chemical reaction between the water and the HEAT.me pad, more precisely by the reaction of the magnesium-iron alloy. Although the smell is perceptible, it does not pose a health risk and does not contain any harmful vapors or chemicals.

The HEAT.me pads are designed to be safe to use without releasing toxic substances. The odor usually disappears quickly and does not affect the food or the air quality. You can enjoy your meal without any worries.

Just be careful not to touch the pad directly while it is heating up, as it gets very hot.

No; a HEAT.me pad can only be used once.

The heating pads have a long shelf life as they are packaged in airtight and watertight aluminum foil. As long as the packaging remains intact and is not damaged, you can store the pads for several years. The exact shelf life is usually around 5 years, depending on the storage conditions.

To ensure maximum shelf life, the pads should be stored in a cool, dry place and protected from direct sunlight. If the packaging is opened or damaged, the pad can absorb moisture, which could impair its functionality. It is therefore important to keep the original packaging intact until use.

The milky liquid that you find at the bottom of the lunchbox (outside the food area) comes from the chemical reaction in the HEAT.me pad. It is produced when the water reacts with the magnesium, iron and salts in the pad. This liquid is a harmless by-product of heat generation.

The liquid is non-toxic and can simply be wiped up with a cloth. You should clean the lunchbox thoroughly after each heating to remove any residue. This liquid has no contact with your food and does not affect the function of the lunchbox or the heating result.

One more hint: Please don't get the idea of drinking this milky liquid.

The white deposit that you notice at the bottom of your lunch box after heating is completely harmless. This deposit consists mainly of minerals such as magnesium oxide, which are formed during the chemical reaction in the HEAT.me pad. It is a by-product of the reaction during which heat is generated.

This substance is non-toxic and can be easily wiped off with a damp cloth. You can touch the deposit without hesitation, but it is not suitable for consumption. Thoroughly cleaning the lunch box after use will completely remove the residue so that you can use it again as usual the next time you use it.

Yes, you can touch the HEAT.me pads with your bare hands before and after use as long as they are cold. However, you should not touch the pad during the heating process or immediately afterwards as it becomes very hot. A considerable amount of heat is generated during the chemical reaction, which can cause burns if the pad is touched directly.

Once the pad has cooled down completely, you can easily dispose of it. It is non-toxic and safe to handle as long as you follow the instructions and do not touch it while it is heating up.

With the HEAT.me Lunchbox Kit, you can theoretically heat a meal up to 48 times a day if you heat a meal every 30 minutes. For more liquid dishes such as soups, you can even heat them up every 15 minutes, so that even more reheating processes are possible. As the HEAT.me Lunchbox Kit works with a heating pad rather than electricity, you can heat a meal as often as you like - just add a new pad and water.

In comparison, a battery-powered lunchbox can usually only heat a meal once before the battery needs to be recharged. This means that you have to plug such a lunchbox back into a socket after just one heating process. This is not convenient.

The kit therefore offers you much greater flexibility and independence, as you can heat up your food anytime and anywhere - even without a power source.

With the HEAT.me Pad, you don't have to "start" a fire or a gas stove to heat your meal. Our Flameless Ration Heater (FRH) only requires a small amount of water - whether tap, river or sea water - and heats your food in just a few minutes. Unlike gas cartridges, you don't need to carry heavy equipment or look for a safe place to set up the stove. The heating pad works in almost all conditions and is ideal not only for lunch breaks, but also for outdoor adventures, emergency situations, humanitarian missions or military situations.

As there is no risk of open flames with the HEAT.me pad, you can also heat your lunchbox in areas where open fires are prohibited due to the risk of forest fires.

After activating the HEAT.me pad, you can dispose of it in an environmentally friendly way. The magnesium mixture that remains after the heating process is non-toxic and can be used as a nutrient for plants. Magnesium is an important component for plant development as it supports the photosynthesis process and promotes growth. You can scatter the used HEAT.me pad (without fleece) in the garden or on your potted plants to enrich the soil.

Note that not every soil is well suited to absorbing additional magnesium. Soils with a high magnesium content or particularly sensitive plants could react negatively. If you are unsure, test the mixture on a small area first or, alternatively, dispose of it in the household waste.

If you do not want to use the pad for plants, you can dispose of it in the normal household waste once it has cooled down completely. Make sure it has cooled down completely before you throw it away.

The lunch bag is made from heat-resistant TPU and can be machine washed at up to 30°C without any problems. However, you should definitely remove the lanyard as otherwise the snap hooks may lose their shine and rust.

Be careful not to wash the bag at temperatures hotter than 30°C. This will protect the material and ensure its longevity. Alternatively, you can also clean the lunch bag by hand with a mild detergent and warm water. After washing, simply leave to air dry - this will keep your lunch bag in top condition for a long time.

Short and sweet: Just like the lunch bag.

Yes, you can put the lunch box in the dishwasher without any problems. The lunch box is made of 18/10 stainless steel and is dishwasher-safe. The silicone seal and the silicone steam hole closure are heat-resistant and also suitable for the dishwasher. This keeps your lunch box hygienically clean and easy to clean. However, make sure to dry the parts thoroughly after washing to preserve the longevity of the material.

Although 18/10 stainless steel is rust-resistant, rust stains can occur under certain circumstances. This is often caused by so-called "flash rust", which is transferred from other metal items, such as low-quality cutlery or pots, to the stainless steel in the dishwasher. Flash rust occurs when tiny metal particles get onto the stainless steel during the wash cycle and oxidize there.

To remove rust stains, you can simply rub the affected areas with a soft cloth and a little lemon juice or baking soda. To prevent future flash rust, make sure there are no rusting objects or parts in the dishwasher and store the lunchbox in a dry place to prevent stains from forming.