FAQ's

Orders are shipped direct from Australia and typically dispatched within 1–2 business days. Standard delivery usually arrives in 3–10 days depending on location, while express delivery generally arrives in 1–4 days after dispatch.

Yes. We offer free tracked delivery Australia-wide on orders over $149. For orders under $149, tracked shipping is $14.95, and express delivery is also available at checkout.

Flat Stacks offers a 30-Day Money Back Guarantee, so if you’re not completely satisfied, you can return your purchase within 30 days for a refund.

Yes. We designed Flat Stacks to be durable for everyday use, which is why purchases made directly through flatstacks.com.au are backed by an exclusive 5-Year Extended Warranty. If you ever have an issue, just contact us with your order details and a photo, and we’ll help organise a replacement.

Yes. If you need replacement lids or other replacement parts, please contact us and our team will help organise the right option for you.

No, you can check out as a guest. However, creating an account can make it easier to view your order history, track purchases and manage your details for future orders.

Creating an account helps keep your order information in one place, making it easier to check past orders, track current purchases and manage your details if you shop with us again. It also helps our team assist you more efficiently if you ever need support with an order.

Simply click My Account to log in and manage your details, view past orders and check your account information in one place.

Once your order has been dispatched, you’ll receive a tracking confirmation by email so you can follow its progress from dispatch to delivery.

Please check your junk or spam folder first. If you still can’t find it, contact us and our team will be happy to help confirm your order details and resend any information you need.

Flat Stacks are made from high-quality, food-grade silicone. The Original range features BPA-free hard plastic lids, while the Ovenware range uses an all-silicone construction with soft silicone lids for higher heat resistance.

Yes. Flat Stacks are safe for the microwave, freezer and dishwasher. Flat Stacks also recommends hand washing the lids where possible to help them last longer and hold their shape.

The Original Flat Stacks containers are not oven safe. Ovenware Flat Stacks are oven safe and can also be used in air fryers, microwaves and on BBQ plates, but not on direct grill contact or open flames.

Yes. Flat Stacks can be used for soft foods and liquids like soups, as long as the lid is sealed properly and pressure on the container is minimised during transport.

The Originals range from smaller Snack Pack sizes around 250–350 ml up to Jumbo sizes at 3–5 litres, while Ovenware ranges from roughly 1–2 litres in the Air Fryer Set up to 6–7 litre Jumbo sizes.

Some sizes are available as individual containers, while others are currently only sold as part of a set. Please, look at our Individual Containers collection.