Onyx Stainless Steel Airtight Round/Flat Container 18cm (w Dividers)

Onyx Stainless Steel Airtight Round/Flat Container 18cm (w Dividers)
Onyx Stainless Steel Airtight Round/Flat Container 18cm (w Dividers)
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Onyx Stainless Steel Airtight Round/Flat Container 18cm (w Dividers). Onyx stainless steel containers are airtight and made from the highest quality, food grade 18/10 stainless steel.  Freezer safe, oven safe (without lid) and BPA free. Includes 2 removeable dividers for versatile storage & serving.

Onyx Official Stockist

Onyx stainless steel containers are airtight and made from the highest quality, food grade 18/10 stainless steel.

This versatile container is excellent for packing a healthy, waste free lunch or home food storage. It has a silicone seal in the lid to make it completely airtight for freshness and 2 removable dividers. The whole container is freezer safe, and the bottom section is also oven safe (without lid).

you are making a difference:

  • Pack a waste and plastic free lunch with reusable lunchware instead of disposable alternatives.
  • Stainless steel is 100% recyclable at the end of it's useful life.
  • Buying responsibly made products that are made to last a lifetime


  • Highest quality food grade 18/10 stainless steel
  • Easy clip-lock lid with an inner silicone seal
  • Airtight 
  • Freezer safe
  • Oven safe (without lid).  Stainless steel is NOT microwave safe.
  • Record details on the stainless steel with a non-permanent marker that can be washed off
  • Dishwasher safe container base, hand wash lid.


19cm W x 5.5cm H.  All measurements are approximate.

US company. Made responsibly in Korea

Browse our other Onyx stainless steel containers

The best containers.

Solid, practical, leakproof. Endlessly useful.

 – 05 May 2022

Love this lunch box!

Such good quality and so durable, definitely need more of these.

 – 30 July 2019

Great size and quality

Love this container. My husband uses it for work lunches and he loves showing it off as the other tradies compliment on his lunchbox, its a simple, good quality product with no fancy logos etc which is why he uses it. Fits plenty of leftovers. Don't use the dividers much but they come in handy every now and then

 – 18 Apr. 2019

Most used container due to slimline depth and leak proof lid

This has been my most-used stainless container. Because it's a thinner depth and leak-proof (godsend), I've been able to have it on its side in my bag without issue. Tip: it fits the PlanetBox Tank Snack Container perfectly if you want to compartmentalise another leak-proof smaller container. Together they've become my travel kit.

 – 13 Feb. 2019

Perfect size for lunches

I love that this is stainless steel and leakproof. The dividers can be taken out or I can just use one of them depending on what I am packing for lunch that day. I have also started including an extra one in my zero waste bag for takeouts and leftovers after a meal out. Perform the size for lunches. THe only part I don't put into the dishwasher is the lid due to the rubber seal.

 – 11 Aug. 2017

We are shipping orders in 1 to 2 working days.  Express orders placed by 1pm AEST are sent same day. 

45 day returns: If you are not satisfied with a product that you ordered online (*exceptions below), you are welcome to return it to us within 45 days, unused, unworn, and in a pristine saleable condition with the original labels attached, packaging and we will refund your cost of goods. Items marked 'Final Sale' can not be returned unless faulty. *except skin and body care, makeup, food, underwear, earrings, and custom order items, which can not be returned for change of mind.

Standard: Once the order has shipped, it will arrive in 2 to 7 days depending on your destination. 

Express: only for orders up to 4kg and excludes bulky/heavy items.

Click & Collect: choose your local store at checkout and your order to be there within 2 to 4 working days (1 working day for Milton warehouse). Please wait until you receive an email or text to advise that your goods are ready to be collect.

International: Flat rate shipping from $15 for orders up to 2kg. International orders are not subject to sales tax, so most prices are less 10% when purchased from overseas. 

See full details on shipping here >

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