Square Set > 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 205 reviews
92%
(188)
7%
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L
LEE

Super quick delivery. Very happy with my purchase, perfect for the caravan although they are a little heavier than I had hoped. Highly recommend.

D
Diane
Nice sizes

Like the different sizes that fit where the rectangular ones don’t.

C
Christina Lucas
Squarely fits well

Love they fit so well into the freezer or fridge then flatten when not in use. Great colours & size options in this set with the smallest being more useful than l'd thought it'd be .

D
Donna Greene
Totally love these containers

I am extremely happy with these containers. They are such a great idea. In the past I have bought containers that I cannot get the lids onto without stepping on them. Then after a while the lids are so loose they won’t stay on. These containers don’t have that problem. Also I love the material they are made out of, they don’t absorb the sauce, they don’t loose their smooth surface. They are way more functional than the competition. And they store away in small spaces. Couldn’t ask for better.

G
Gillian

A bit smaller than I thought they would be, but you can’t beat the quality

F
Freddy
Love them after 3yrs, bought more

We love Flat Stacks so much we had to come back and buy more. We live in an RV and these are great because they take such little space to store, the lids stay snapped on the containers so you never have to find the lid and they last. We just got rid of our old plastic containers and this is our second time buying this set.



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★★★★★ Reviews

Let customers speak for us

3278 reviews
92%
(3030)
5%
(171)
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(40)
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(24)
Meets expectations!

I bought ovenable silicone bakeware back when they first came out. I hated them. They stained and retained smells, felt flimsy and were very disappointing. But I really liked the idea of them. I think Flat Stacks ovenware are what I liked about the idea of silicone oven ware way back then. It just took some years for them to evolve to match my expectations.
I’ve decided to buy the whole set now!

Although I have not really had a chance to use more than one, I do love the ease with being able to find the correct lid needed. These containers were delivered whilst I was very sick in hospital which is why I have not used any of them.

I love them, however am disappointed as I was lead to believe they would stain. Was about to buy the oven ware, and now not so sure

awesome storage!!

best food storage containers I have ever found. And they don't take up a lot of cabinet space.

Flat Stack Starter Pack

I love my new set of Flat Pack containers. They have given me a lot more cupboard storage in my caravan. I have just bought the round containers and looking forward to using them. I am probably going to buy another set for home as well. Their after sales service is excellent, they responded to my queries so fast I will be referring these to all my caravanning friends.

Love these products so much

I've been a flat stacks convert for a while now and I'm slowly swapping everything over to have a full collection. They save so much room and the quality is excellent. I wouldn't use anything else