Frequently Asked Questions

Copies can look similar online, but you feel the difference in your hand.

• Thicker, higher-grade silicone. Flat Stacks use thick, food-grade silicone that holds its shape when it's full. Many copies use thinner silicone that collapses with the slightest pressure, even with food inside, and can crack along the fold lines.
• Stronger lids. We've redesigned our lids to be stronger, longer lasting and far less likely to lose their shape.
• 5-Year Replacement Warranty on every order from flatstacks.com.au, plus our 30-Day Money Back Guarantee.
• An Aussie family business. Mother and daughter Julie and Courtney have been improving Flat Stacks since 2014, and we're here to help if anything goes wrong.

Flat Stacks food containers have food-grade silicone bases and clip-on, BPA-free hard plastic lids. They go in the fridge, freezer, microwave and dishwasher. Lift the air valve before you microwave to let the steam out.

They don't go in the oven. For the oven, air fryer or BBQ hot plate (never over an open flame), choose Flat Stacks Ovenware: it's all silicone with soft silicone lids, so one dish goes from the oven to the table to the fridge. Washing the lids by hand where you can helps them keep their shape for longer.

Yes. Ovenware Flat Stacks have a premium all-silicone build, so they go in the oven, air fryer, microwave and freezer, and on the BBQ hot plate (never over an open flame). Cook, serve and store leftovers in the same dish, then fold it flat to put away.

Yes. The soft silicone lid goes in the oven with the dish, so you can cook with it on to keep roasts, casseroles and bakes moist and stop the splatter. When you're done, the same lid keeps the leftovers fresh in the fridge.

Yes. Flat Stacks Ovenware is made from premium food-grade, BPA-free silicone, so it's made for cooking, serving and storing food, from the oven or air fryer to the table and the fridge.

Food slides off the smooth silicone, and you can flex the sides to pop your bake straight out. No soaking and scrubbing like a glass dish. Then the whole dish, lid and all, goes in the dishwasher.

Yes, soups, stews and sauces included. Clip the lid on and push the air valve down for an airtight seal. When you carry them, keep them upright and don't squash them into a full bag, so the pressure doesn't push liquid out.

Yes. Empty Flat Stacks fold down flat and stack neatly, saving up to 60% of your cupboard space. They squash down as the leftovers go down too, so they take less room in the fridge and freezer, and you can store them with the lids on.

Originals go from small snack containers of around 250 to 350ml up to our Jumbo containers in 3, 4 and 5 litres. Ovenware goes from the 1, 1.5 and 2 litre Air Fryer Set up to the Jumbo 6 and 7 litre dishes.

Original Flat Stacks are made for everyday food storage and go in the fridge, freezer, microwave and dishwasher.

Ovenware Flat Stacks have a premium all-silicone build with soft silicone lids, so they also go in the oven, air fryer and on the BBQ hot plate (never over an open flame). Shop Ovenware

Years. One reviewer is still using the sets she bought over 10 years ago. Every order from flatstacks.com.au comes with our 5-Year Replacement Warranty, so if anything goes wrong, send us your order number and a photo and we'll organise a replacement.

Yes. Contact us and tell us what you need, and we'll help you find the right replacement.

Yes, in some sizes. Some sizes are sold on their own and others only come as part of a set. See what's available in our Individual Containers collection.

Delivery is free Australia-wide on orders over $149. Under that, tracked shipping is $14.95. Orders leave our fulfilment centre on the Gold Coast, usually within 1 to 2 business days. Standard delivery takes 3 to 10 days depending on where you live, and express (choose it at checkout) usually arrives 1 to 4 days after dispatch.

As soon as your order is dispatched, we'll email you the tracking details so you can follow it all the way to delivery.

Check your junk or spam folder first. Still can't find it? Contact us and we'll confirm your order details and resend anything you need.

Send them back. Every order comes with our 30-Day Money Back Guarantee: if you're not completely happy, return your purchase within 30 days for a refund.

Yes. Every order from flatstacks.com.au comes with our 5-Year Replacement Warranty. If anything goes wrong, send us your order number and a photo and we'll organise a replacement.

Yes. Every item in the bundle comes with our 30-Day Money Back Guarantee and is backed by our 5-Year Replacement Warranty.

No. You can check out as a guest. An account keeps your order history and details in one place, so it's easier to track orders and shop again, and quicker for us to help if you ever need support with an order.

Log in to My Account to update your details and see your past orders in one place.