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.


  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 177 reviews
Jen S
Great product

really useful quality product, and great colours

Kathryn Willard
Square set flat stacks

These are by far the best containers to have when caravanning or camping. I've bought so many packs of all shapes and sizes.

Lesley Howard

This set will fit into my camper van fridge and be really useful while camping

Fiona Drennan
Terrific storage containers

These are terrific, compact for camper trailer storage and then expand to good sizes for storing meals and leftovers.

Christy Arbon

Square Set > 350, 540, 800 & 1200 ml

Douglas Carlson
Too popular

Only problem with them, is everyone loves them so they never get returned. I need more of the small sizes.

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★★★★★ Reviews

Let customers speak for us

2777 reviews
Great product

really useful quality product, and great colours

Free Gift???

Ovenware was great, used all 3 pieces on the weekend to cook marinated chicken wings but I did not receive a free oven mitt :(

Please email us at hello@flatstacks.com.au so we can help :)

Flat stacks

One clip on the lid broke before we even used it. Also find it difficult to get the lids on when they are expanded.

My daughter and I love these products, we now both have every set.

Rectangle Value Pack > 6 sizes (save $)