The Complete Guide to Flat Stacks Containers for 2019

collapsible food containers

How many times have you faced the problem of having to put away leftovers or store lunches and snacks for the kids or you or your partner? It happens to just about all of us all the time, right? But it’s not just picking things up that’s a hassle.

It’s also figuring out how you’re going to pack them up. If you’re like the rest of us, you’ve probably tried a little bit of everything, or so you think. But have you tried flat stacks containers?

Table of Contents

Flat Stacks Containers Overview

Let’s start by taking a look at what these containers are. They’re food storage containers, just like all of your other favourite brands. You can put anything you want in them and keep them secure and fresh. But what makes these containers different is the fact that they are made out of a collapsible silicone rather than the standard plastic or even glass that you find with other food storage containers.

These collapsible food containers are designed to be simple to use, versatile and more convenient than what you’ve been using so far. They’re made to store anything you might want, and you can take them anywhere you want as well. Of course, there’s a whole lot more to it than that, so we’ll take a closer look at all of the features in the next section.

Flat Stacks Containers Features

Let’s take a look at some of the essential features of these collapsible containers and why you’re going to want one (or more) in your collection, shall we?

  • Flatten entirely for easy storage
  • Microwave safe
  • Dishwasher safe
  • Fridge/freezer safe
  • BPA free
  • Food grade silicone
  • Size options
  • Color options
  • Shape options
  • Air evacuation valve
  • Clear latch lids
  • Airtight/leakproof seal
  • Folds down 60%
  • 5-year warranty

How Flat Stacks Containers Works

When it comes to using flat stacks storage containers for yourself, it’s super easy to do. Let’s say you’re looking to store them away when they’re not in use.

  1. Apply firm, even pressure around the top of the container
  2. Push straight down on all sides
  3. Flatten box entirely
  4. Store wherever you usually store your food storage containers

When it comes to using the container, it’s a straightforward process to go through as well. You can start by taking the box out of the cupboard or wherever you chose to store it.

  1. Apply pressure to the inside bottom of the container
  2. While applying pressure, pull up on the sides of the container
  3. Pull the sides all the way up
  4. Even out all parties to make sure they are fully extended
  5. Fill with food/ingredients
  6. Holding the top of the box, press the lid onto the top
  7. Close latches to seal the box
  8. Store on the counter, in the fridge or the freezer

It’s that easy. That means it’s going to be a snap for you to pack up the things you need or to put the containers away after they’ve been washed, so they’re ready for the next time. But just what are you going to use these silicone food storage containers for?


You can use these containers for absolutely anything you want. The silicone is of high quality and durable. That’s why it’s able to be used in warm or cold environments.

That also means that it can easily store hot or cold foods (though it’s not intended to keep your meals warm). You’ll be able to store anything from liquids to solids with no problem as well.

That makes it easier for you to pack whatever you might want to take with you.

Because you’ll have an airtight seal, you’ll also be able to toss these containers in a lunch box or wherever you want and have them ready to go when you are.

You won’t have to worry about them leaking in your bag. Not to mention, since the silicone food containers come in different sizes, you’ll be able to use them for small snacks or large meals, even meals for more than one person at a time.

Overall, you’re pretty well only limited by your imagination when it comes to the different applications for these flat stacks containers.

Each one is going to have a lot of different uses, and you’ll be able to use them in whatever way works best for you.

That’s going to be a benefit when it comes to any food storage container

Comparison of Silicone Food Containers with Other Food Containers

If you already have food storage containers (and don’t we all), you’re probably wondering just what’s so great about these compared to the ones you already have, right?

You may be thinking, and I already have containers that I can use to store whatever I want and that I can store wherever I want them. What’s so special about these collapsible food containers?

Well, you started the benefits right there on your own. The biggest thing that these containers have going for them that your other containers don’t is that they are collapsible.

That means they’re going to take up a lot less space and that frees your area for the other things you want.

All those pots and pans, dishes, cups, and even speciality dishes or utensils will now have a home because you don’t need as much space for your food storage. That’s a benefit over traditional containers right there.

Silicone vs Plastic Food Storage Containers

Silicone containers are also designed not to stain, which is important when you’re going to be storing things like pizza sauce, spaghetti, curries, beans and anything else that’s dark in color.

With plastic containers, staining happens a lot, especially if you leave those things in the container for an extended period or if you put them in the microwave.

These containers won’t warp in the way you’ll find with plastic containers either. If you’ve ever put a plastic container in the microwave, you know that it can develop marks, lines, bumps and a whole lot more.

The silicone for these containers is designed to resist this, and you still have the high-quality content that you’re looking for.

They’re also designed not to absorb the smells that you can find with plastic. When you microwave them, especially a plastic container incorporates just about everything, but you won’t have that same thing when it comes to the silicone. They’re designed to keep things fresh and to resist odors.

Silicone vs Glass Food Storage Containers

When you compare these flat stacks storage containers to the glass, you’ll see that there are different benefits.

Glass isn’t going to stain from darker foods or being put in the microwave, just like the silicone. But you will notice that glass containers are quite heavy.

They’re not something you want to take around with you when you’re travelling or send to school with your children because of the added weight involved.

On top of that, the glass is fragile. Even though glass storage containers are designed to be durable and thick pieces of glass (part of what adds to the weight), they’re still going to be breakable.

Collapsible food containers like these, made out of silicone, are not going to be as prone to breaking. They can be dropped or knocked around without you having to worry about breaking.


One of the biggest positives for this product is that it’s safe just about anywhere. It’s BPA free, which makes it healthier for your family. Plus, it can be used in the microwave, fridge, freezer or dishwasher.

Being able to clean up anything in the dishwasher is an instant advantage so you’ll want to take a look at that feature twice.

No matter what you put in here, it’s made to come clean as soon as you put it through a wash cycle.

Another great benefit (and probably the reason you’re primarily here) is that it collapses. That means it’s going to fold down almost entirely flat and it’s going to take up a whole lot less room in your cupboard.

If you’re tired of all the space, it takes for your other food storage containers. This one is going to be a huge benefit.

They’re also airtight and considered entirely leakproof. That means you’re not going to have a mess in your fridge or freezer.

You’re also going to have food that stays good even longer. You won’t have to worry about it spoiling early.

You’ll have size options and shape options that make it easy to pack whatever you want. If you’re looking to take a small portion for lunch or pack up enough leftovers for everyone the next day, you’ll have options to choose from.

The versatility of being able to take them anywhere is a great feature as well. Because silicone containers are lightweight and they’re not breakable you can send them to school even with small children.

When you go to put them away, it’s not just that they fold down that makes them easy either. You can also stack the silicone containers together quickly, and they’ll stay together.

That’s because they’re designed to fit that way and to make sure they’re ‘stuck’ together when you’re not using them.

The silicone is non-slip, which means they’re going to be safer when you put them on counters as well. You don’t have to worry about sliding it across the table or it getting knocked over too quickly because the silicone doesn’t slip.

The extended warranty is going to be another benefit. Having a 5-year warranty lets you know that the product is right and that it’s designed to last for a long time as well. You’ll be able to keep using it the way you want for your household.


One of the drawbacks of this product is that the price point can be a little difficult for some. However, it’s essential to consider all of the features that you’re getting for the price point and how much it could be protecting your family from some of the harmful chemicals and additives that you might find in other, similar food storage products.

Another problem that some have found is that it can be challenging to put the lids on correctly. Because the cover is what creates an airtight seal, it needs to be pressed down onto the containers firmly.

That, however, can cause the containers to collapse in the same way they would for storage. A little bit of finesse can be required to get the lids on correctly without collapsing the boxes and resulting in a mess.

Some have also found the tabs on the lids to be less than ideal. For some, these break off or don’t latch properly, which can make it very difficult to use the containers the way that you want to.

It’s essential to be careful with these latches and make sure that you can close them during the initial warranty period for the product.


Overall, these food storage containers do have some great benefits. They’re going to give you more space in your cupboards, and they’re going to make it easier to keep them out of the way when you don’t need them.

You can even still use then in your fridge, freezer and microwave like you would use your traditional food storage containers. On the other hand, you may have a little trouble with the price or with the fact that they can be challenging to seal.

It’s going to be entirely up to you whether they’re worth a little bit more hassle (and a little bit more money). But overall, the silicone food containers seem to be a pretty good alternative to what’s out there.


9 thoughts on “The Complete Guide to Flat Stacks Containers for 2019

  1. Elizabeth says:

    I purchased multipacks of the containers last year at the Ventura fair. The rubber gaskets have mold on them. I have tried to clean them and it doesn’t work as well as being health risk. Is it possible for you to send me a few new ones? I use the orange size ones daily. Thank you so much

  2. admin says:

    Hi Elizabeth,

    Thanks for your message.
    Could you please tell us which one or which item NO product in our website you are using?
    So we can check about it.

  3. Lesley says:

    Do you have replacement lids for the square stacks. I purchased a set and one of them has broken in the freezer. I thought these were freezer safe?

  4. admin says:

    Hi Lesley,

    Thanks for your message.
    Could you please tell us which one you had bought? and where did you buy it, it may have some slightly difference between our products and others. but please show us which one you bought and we will see if it’s the same.
    Thank you.

  5. Tom says:

    I purchased some Flat Stack containers (in a set – 2 sets) and one of the sizes I use a lot, the latches on two covers have failed (broken off). How do I get some new tops? They are the blue size.

  6. Linda Norman says:

    I purchased a set of five at the Texas State Fair and the purple lid has a broken tab. Can I get a replacement lid?

  7. admin says:

    Hi Linda,

    Who did you buy these containers from and which sizes you bought? you may contact the supplier for help,
    If you can not reach them, maybe you can go to our online retail shop to buy a new one.
    The website address is:
    Thank you.


  8. Julie Mazac says:

    I bought 2 sets at the Minnesota State Fair a couple years ago. I love the containers but the lids are terrible. I purchased another product and they are much better.

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