Top & Best Thermal bag Review 2021 – How to Select Ultimate Buyer’s Guide


Thermal bag: How to choose the best one in 2021?

Today we are going to talk about the thermal bag, an indispensable accessory for you to maintain a healthy diet anywhere and still save money.

Disregarded in the past, today the thermal bag is a guaranteed presence at work, in the gym, at school, at camping or on the beach. And yet it became a fashion accessory!

With its popularization, today there are models of different sizes, formats and functions. In this article, we wil

First, the most important

  • The thermal bag became a fever especially because it helps you maintain a balanced diet and still save on the budget.
  • The available models range from the smallest and simplest, to the largest and most reinforced against leakage. But not all are really thermal.
  • Therefore, we will show you here how to identify the most efficient thermal bag and what factors you should take into account before making your purchase.

You may also like:

  • Thermal box: How to choose yours in 2021?
  • Large thermal box: How to choose the best of 2021?
  • Thermos: How to choose the best model of 2021?


Ranking: The 7 best thermal bag models

Those looking for a thermal bag want to combine the efficiency of the correct storage of food with the beauty of the accessory. Manufacturers know this and have innovated in manufactured models.

Therefore, we are going to introduce you to the best thermal bag models available on the market below.

Buying Guide

Choosing your thermal bag just for the look and price may not be the best option. To find out if the bag is really thermal and functional, you need to consider other factors.

That’s why we created this Buying Guide with all the information you will need to make the best decision.

What is a thermal bag?

Lunch boxes are in fashion and with them the thermal bag arrives to complete the look and ensure the correct and safe packaging of food and meals.

The thermal bag is nothing more than a compact bag with internal reflective walls with aluminum foils that generate thermal insulation.

Therefore, in addition to preserving meals for a certain period of time, the thermal bag still helps in saving and avoids the consumption of industrialized foods.

Until recently, taking snacks and meals to public places could even be considered inelegant. It is a good thing that this is already in the past. After all, people around the world value healthy eating and / or the economy.

This practice is still uncommon , in some parts of the world it is already very normal for people to gather in parks and squares to have lunch outdoors with the meals they bring from home.

Around here, fashion has already caught on in the work, study and fitness centers. First, to avoid excessive spending on restaurants and cafeterias. And second, to ensure a balanced and personalized diet.

And for that, it is essential to use a thermal bag, which guarantees the preservation of meals between 2 and 8 hours, depending on the model.

What is the difference between thermal and semi-thermal bags?

What many people do not know is that attention is needed when buying the thermal bag. That’s because, many models sold today are not really thermal.

The fact is that there are two types of bags: thermal and semi-thermal. Both serve to store food and meals. However, to transport the ideal is to opt for the thermal bag.

This is because the thermal bag has the inner part welded. This means that if the ice or other food melts, the liquid will not leak out of it.

The semi-thermal bag has its inner part sewn, which is not able to prevent leaks of liquids, such as ice and drinks. In addition, unlike the thermal bag that has a reflective interior, the semi-thermal has an opaque interior.

Therefore, the temperature is not reflected making this bag less efficient in maintaining the desired temperature for long periods. Below, you can see the main differences between the thermal bag and the semi-thermal bag:

What is the best thermal bag for each situation?

The choice of the ideal thermal bag must take into account the use you will give it. For example, for long hours away from home, you will need a larger bag to accommodate all meals. For a short walk, a small bag is enough.

Therefore, the manufacturer brands have specific models for each situation. And, among the most common situations to take the thermal bag are:

    • gym
    • Travels
    • Job


If you are looking for a cool bag to take your meals and snacks to work, ideally, opt for a bag of flexible material that can be folded and stored when empty.

If you want a thermal bag to use during a trip or camping trip, we recommend a more resistant bag that can better withstand the impacts of transport.

However, if you just want to have a thermal bag to take small snacks to the gym, such as fruits, for example, a small, hand-held thermal bag would be the best option.

Later in this article, we will show in detail what differentiates the thermal bag models available on the market today.

How to use the thermal bag?

The thermal bag needs care if you want to prolong its life and maintain its conservation characteristics. To start, always protect food in plastic bags or film paper, before placing it in the thermal bag.

With this, in addition to keeping the inside of the bag always clean, preventing leaks, you also prevent the proliferation of germs and make the food last longer.

However, in the case of foods that cannot be placed in bags, such as soup, for example, we recommend the use of plastic or glass containers. The key is that the pot is free of BPA and PVC, substances that are toxic and dangerous to your health.

After taking care of the food that will be transported in the thermal bag, another recommendation is that you should not mix hot and cold food in the same compartment.

In general, food and drinks in cold temperatures can be stored for up to 10 hours. Hot meals are maintained for a maximum of five hours.

Finally, always avoid exceeding the weight limit of your thermal bag. This way, you reduce the chance of the bag becoming deformed and the seams, handles and zipper breaking.

How to clean and sanitize the thermal bag?

Taking care of your thermal bag is important both to conserve it and to prevent the proliferation of germs, bacteria and odors.

After spending the day with your thermal bag, when you get home, wipe with a cloth moistened with alcohol to clean and remove the smell of food.

Before storing your bag, let it dry well. The important thing is not to let the inside of the thermal bag accumulate moisture.

It is worth mentioning that you should never put the thermal bag in the washing machine. And never use chemicals like alcohol, acetone and bleach, which can damage and eliminate the thermal power of the bag.

Remember that the outer part, which also contains bacteria and dirt, must also be cleaned before and after use.

What are the advantages of the thermal bag?

As we have seen, the advantages of the thermal bag are immense. Starting with the fact that with this accessory you keep food protected and preserved to be consumed hours after it is prepared.

Thus, you encourage the habit of having a healthy diet, prepared by you at home, and avoid industrialized foods. In addition, you still stop spending on food in restaurants and snack bars, which reflects in the economy of your budget.

Another advantage of the thermal bag is that, nowadays, you can find different models to accommodate pots and bottles of different sizes, according to your need.

More than that, the thermal bag is an accessory, practical and comfortable to carry and in addition to all this it has also become an accessory to compose the look.

You will often see people at work or at the gym with their own thermal bags. Therefore, nowadays the thermal bag has become a fashion item, for women and men, with models, colors, shapes and fabrics of the most varied.

It is even possible to find options that are externally confused with the traditional women’s bag. For all these advantages it is difficult to find any negative point about the thermal bag.

So, for you to have an overview, check below the main advantages of the thermal bag:

    • Preserves and maintains food temperature
    • Stimulates healthy eating
    • Ideal for any occasion
    • Stylish and modern
    • Variety of sizes and models
    • Helps save the budget

How much?

The price of a thermal bag varies widely. The value will depend mainly on the size and material of manufacture. Therefore, a thermal bag can cost between R $ 15 and R $ 800.

You don’t have to buy the most expensive one. But keep in mind that, in general, the very cheap ones may not be made with totally thermal material.

Where to buy?

You will find thermal bag models for sale in sports, department stores and hypermarkets.

However, we recommend that you make your purchase at online stores such as Amazon, for example.

The fact is that, in online stores, you find more options of models and sizes, in addition to more competitive prices. Not to mention that you get your thermal bag from the comfort of your home.


To give you an idea, a small bag measures around 18cm high, 26cm wide and 17cm deep. A larger thermal bag can measure 38cm X 29 cm X 29 cm.

However, some brands of thermal bag also display the size of the accessory considering the weight or capacity in liters such as:

  • 7.5L – up to 9 350 ml cans;
  • 18L – up to 20 350 ml cans;
  • 36L – up to 54 350 ml cans.

The recommendation is that you carefully evaluate the amount of meals you will need during the day. After all, it’s no use having to spend the day at work and only being able to take a meal if you need to stay late.

On the other hand, a very large bag will be neither practical nor comfortable if your intention is to bring only small snacks.

Manufacturing material

After choosing the size of your thermal bag, it’s time to look at the manufacturing material, both external and internal lining. This will influence the thermal quality of your bag.

In general, experts consider that the most efficient thermal bag is made externally with polyester. But you will also find bags made with nylon and insulating plastics.

The most effective internal coating for thermal insulation is usually made with PVC and aluminum sheets. But, if you want to ensure greater thermal efficiency, opt for the bag with internal lining made in 100% aluminum.

You will also find thermal bags with the inner part made of foam, which allows greater comfort in accommodating the items. In addition to the type of material used, also note the thickness of the internal thermal material used.

This is because thermal bags with very thin thickness may not have the desired efficiency. Ideally, this layer should be above 10mm.

Retention time

It is a fact that the food preservation time will depend on how you use your thermal bag. If you open and close the pouch several times, the outside temperature will affect the inside and therefore the food.

This is especially detrimental to maintaining meals on warmer days. Still, it is worth considering the storage time stipulated by the manufacturer of the thermal bag.

In general, you will find models for sale with a shelf life that varies between 2 and 8 hours.


The thermal bag with shorter storage time allows you to prepare your lunch box in the morning and have time to get to work and put it in the refrigerator.

But you can increase the talk time with ice or a thermal gel bag. The thermal bag models that guarantee longer conservation time, are ideal for short trips or walks in the park.


Another factor that you should note is the type and number of internal partitions of the thermal bag. The dividers will help you organize and maintain food, which must be separate.

In general you will find models with partitions that vary between two and six. In addition, the most modern models offer specific compartments for you to store your cell phone, keys and personal documents.

Some bags even allow you to store hot and cold foods properly.


shoulder strap

Whether large or small, it is essential that your thermal bag is comfortable to carry. Of course, the larger the thermal bag, the more this factor should be prioritized.

Anyway, today manufacturers offer different options for handles. There are hand straps, usually for a very small thermal bag.

In addition, there are shoulder straps and long straps, removable and adjustable, which you can use laterally or transversely on the body. Most also offer padded shoulder support.

But, in addition to these options you will also find thermal backpacks with even more comfortable and practical handles. Backpacks, however, are less formal accessories.


Pay attention when buying your thermal bag because, in general, the best models offer extra items, which helps you to save even more in the budget.

For example, some models are accompanied by a pot of lunchboxes, which vary between 2 and 6. In addition, some thermal bags also come with a thermal gel bag, which acts as a reinforcement in maintaining the internal temperature.


Did you know that a survey conducted by the Association of Workers’ Benefit Companies (ABBT) found that the consumes around R $ 34 per day to make a meal outside the home?

Of course, this varies according to the state and habits. But, if you replace restaurants and snack bars with the thermal bag, and considering only the working days of the week, based on this research you can save at least R $ 680


Similar Posts

Leave a Reply

Your email address will not be published. Required fields are marked *