Square Set (4-pc) — 350, 540, 800 & 1200 ml

Our square set contains the 4 most useful sizes, perfect for everything from packed lunches to leftovers and baby-food to cold-cuts. 

Here's why you'll love our square set:

✅  Ideal for all things square like sandwiches, cheese slices & brownies.

✅  Perfect as a lunch box!

✅  They look great in your kitchen and are still colour-coded so you can easily match the lids with the bases.

Dimensions:

  1. 350 ml | 11.3 x 11.3 x 6.4cm | collapses to 2.8cm | 110g
  2. 540ml | 13.2 x 13.2 x 6.4cm | collapses to 2.8cm | 142g
  3. 800 ml | 15.2 x 15.2 x 6.9cm | collapses to 3.0cm | 186g
  4. 1200 ml | 17.2 x 17.2 x 7.4cm | collapses to 3.2cm | 232g

Customer Reviews

Based on 252 reviews
92%
(232)
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J
Jacqueline

Absolutely gorgeous, will be buying more - happy to retire some old containers even though theyre still functional they don’t bring you joy like these flat stacks do.

J
Jo-Anne Blake
Perfect sandwich storage!!

I love all my flat stacks!! (round-square- and rectangular!
My storage is limited, so they are awesome..
I haven’t tried my oven ones yet, but it will be soon
Thanks for a great product…I have bought some for gifts..💕💜🇨🇦

J
Jillian

Love these. Great for the motorhome.

M
Marie

Lovely colours and good range of sizes. Just bought a 2nd lot to give to my daughter in law for her birthday. My son's family does a lot of travelling for holidays and these will be very handy.

S
Sandra Sagara
Flat Stacks

We love Flat Stacks containers - they are versatile, durable, leakproof, and easy to store. We purchased a set originally at a Christmas show and sale event, and got a lot of use out of them. We wish we could find them in stores for purchase.

C
Cathj
Practical & pretty

Love the square set, good sizes, fits nicely in the fridge & freezer. And love the shades of green 💚



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★★★★★ Reviews

Let customers speak for us

3975 reviews
97%
(3874)
5%
(218)
2%
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Space saver

I have these containers and I love them, if I have a small amount left over after a meal I put it in one of the smallest ones and collapse it, you have a choice of different sizes for large amounts or smaller amounts.

The item for storage purposes is good, but doesn’t have a solid seal so dies leak some when traveling. Mostly a problem when taking left overs for lunch.

Impressed, these are great 👍

Customer Service is LESS THAN DESIRABLE

I received multiple sets. I did the light wash as insert instructed and the large green top no longer snaps to the large green bottom. I've sent 2 emails and called whenever I could--the time difference makes it hard with my schedule--and I've gotten nowhere. Aside from not being able to use the large green stack, I'm happy with the other stacks. I've kept my larger containers from the other brand to be safe, because I'm just a bit nervous.

Love 'em!!

I love everything FlatStacks makes! I'm especially glad to have these jumbo ones as we approach Thanksgiving!

Disappointing

My husband used these in the top shelf with at least a 50mm gap from the top and the dish is destroyed. I certainly wouldn't use it on a BBQ as suggested if this is what it does in an oven.

Hi Belinda,
Thank you for taking the time to share your feedback. This definitely shouldn’t have happened in the oven, especially with the space you described. We’re really sorry your dish was damaged.

Could you please email us at hello@flatstacks.com.au
with a photo and a description. Our team will look into what went wrong and help make it right for you.

Our Ovenware range is oven safe as advertised, and every piece is backed by our 5-year warranty, so we’ll absolutely take care of this for you.

We look forward to helping you resolve this quickly.