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Flat Stacks Food Storage Container Set (4 Square)

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Discover the ease of an organized kitchen.

Our set of 4 Square Flat Stacks is perfect for storing everything from packed lunches to leftovers and baby-food to cold-cuts.

Flat Stacks collapse down while not in use to save up to 60% of space and help keep you organized. Flat Stacks also have matching colour-coded lids that can stay attached while stored. This will save you time searching for matching lids and containers.

Flat Stacks are 100% BPA and BPS-free, so it’s safe for you and your family. They’re microwave, dishwasher, and fridge/freezer safe making leftovers and cleanup a breeze. The top valve can be closed to seal contents inside the containers or opened to vent air out as well. This keeps food fresher for longer and is great for use in the microwave.

Flat Stacks Containers Product Description Infographic

Product Details

  • Collapsible for storage to save up to 60% storage space.
  • Matching colour-coded lids that can be stored with the matching containers to save time from looking for them.
  • Microwave, dishwasher, and fridge/freezer safe which means fewer dishes.
  • 100% BPA and BPS free so it’s safe for you and your loved ones.
  • Food-grade silicone makes it highly resistant to damage from varying temperatures (i.e. freezer, microwave).

Shipping and Satisfaction Infographic

Check out the reviews below from people just like you!


Product Dimensions:

Yellow - 350 ml | 11.3x11.3x6.4 cm | collapses to 2.8 cm

Purple - 540 ml | 13.2x13.2x6.4 cm | collapses to 2.8 cm

Orange - 800 ml | 15.2x15.2x6.9 cm | collapses to 3.0 cm

Blue - 1200 ml | 17.2x17.2x7.4 cm | collapses to 3.2 cm

Product Weight:

110-232 g/.24-.51 lbs


2 year limited against manufacturer's defects.

Care & FAQ's

  • The seal on my lid comes out in the dishwasher.
    The seal in the lid does come out for cleaning purposes. If food was trapped under the seal and it was not removable, there would be a potential for mold to build. We would suggest removing the seal prior to placing the lids into the dishwasher to ensure they are not lost or damaged. When replacing the seal, ensure the seal is inserted on its narrowest side.
  • My lids seem to be warping?
    Always use the top rack of the dishwasher, if you choose not to hand wash this product. This will prevent the lid from becoming too hot and changing shape. Even though Flat Stacks are dishwasher safe, like any item, hand washing provides product life longevity.

Customer Reviews

Based on 9 reviews
TenBrink Sherri
The best storage products

We really like the flat stacks. We have twelve of them and are disposing of all of the other stowage containers we own

Wow, wow, wow! Your review has us so pumped up, thank you so much Sherri for such a great review! <3

Julie Merrill

I love these. I’m going to order more!!

Yay! Obviously, we think you should order more Julie :P

B Salfi
Square Flat Stacks

Excellent product. We now have 5 sets of Flat Stacks and absolutely love them. They take up so little room when not in use yet seal and stack nicely when in the fridge full of leftovers.
The customer service with this company is AMAZING. So easy to deal with. I had an issue with the seal on a few of our FlatStacks that were 5 years old and Ocean Sales went above and beyond in making us satisfied customers. Will definitely shop here again.

This was heartwarming to read, we appreciate you sharing your experience! We will share your review with our team, feedback like yours reinforces our commitment to customer satisfaction. Thank you :)

Elaine Novacek
So far so good

I bought these to get rid of all my other Tupperware type bowls and lids. Going great. Love them.

Welcome to the Flat Stacks family Elaine! We are confident you will love them, and if you have any questions, please feel comfortable to reach out to us. Enjoy compacting your cupboard!

Jenny Flanagan
Love these!

These are by far the best space saving food storage containers. I’ve tried cheaper versions but they are just too thin and flimsy. Do yourself a favor and spend the extra money on Flat Stacks.

We couldn't have said it better ourselves! Thank you Jenny for the raving review, we appreciate it so much, we hope you enjoy the Flat Stacks!

Customer Reviews

Based on 2 reviews Write a review