Adult Lunch Boxes

Adult lunch boxes for the lunch you pack for yourself. Whether it's a desk lunch, a shift on the tools or a day at uni, our grown-up lunch boxes are sized for adult portions, come in solid colours with no cartoon prints, and fit together with our insulated lunch bags. Choose a leakproof silicone bento, a stainless steel lunch box or a ready-made lunch kit with the bag included.

The best lunch boxes for adults, compared

Which adult lunch box is right for you?

• Core stainless steel lunch box (1200ml): A stainless steel base with a clear Tritan lid and a silicone seal that makes the whole box leakproof and airtight. Lift out the divider to go from 3 compartments to 1. Tough, doesn't hold on to smells, and the most grown-up box we make.
• 3 Compartment Silicone Bento (1200ml, 21 x 14 x 7cm): A main and two sides, each in its own leakproof section. A full adult lunch in one box, and you can reheat it in the microwave at work.
• 5 Compartment Silicone Bento (1100ml): Five sections that each seal on their own, for grazers, long shifts and anyone who likes a bit of everything.
• Silicone Round Bento (900ml): One leakproof bowl for pasta, salad, fried rice and last night's leftovers. Microwave and air fryer safe, so you can reheat at work in the same box.
• Snack boxes and zip lock bags: Midi Snack Boxes (3 x 350ml) and Mini Snack Boxes (5 x 100ml) for nuts, fruit and dips, plus reusable zip lock bags instead of cling wrap. See every lunch container.

Want a hot lunch at work too? Pair any of these with an 800ml insulated food jar for soup, curry or pasta.

Lunch box with bag for adults

Every adult lunch box here fits our insulated Commute bags. The Commute Lunch Tote comes in small (20 x 21 x 9cm) and large (25.5 x 26 x 14.5cm), and the Commute Lunch Bag (30 x 25 x 9cm) holds two 1200ml bentos with an ice pack compartment in the base. Compare them all in our lunch bags for adults.

Adult lunch kits

Want the whole setup in one go? Our adult lunch kits pair a large Commute bag with matching containers: a stainless steel lunch box, a snack box set and a round bento for the full kit, silicone round bentos for meal prep, or a 5 compartment bento with snack boxes for grazers. They make an easy gift for dads, partners and anyone heading back to the office. See more lunch bag and bento sets.

What to look for in a lunch box for adults

• Adult-sized capacity: around 1000 to 1200ml covers a full lunch. Add a snack box for morning tea.
• A proper seal: so dressing, curry and yoghurt don't end up in your work bag.
• Reheat or not: choose silicone if you reheat at work, or stainless steel for cold lunches and salads.
• Easy cleaning: our silicone bentos are dishwasher safe in any rack.
• Food safe: every Spixal lunch box is BPA free, as part of our Food Safe Promise.

Work lunch help from our blog

• Best bento lunch box for adults: our 2026 guide for Australia.
• Best lunch bags for work: what to look for in an insulated work lunch bag.
• What to pack in your lunch bag: easy, healthy work meals.

Adult lunch box FAQs

What is the best lunch box for adults?
One that holds an adult portion, seals properly and suits how you eat. The Core stainless steel lunch box suits cold lunches and anyone who wants a grown-up look. The 3 compartment silicone bento suits a main and sides, and the Round Bento is best for reheating leftovers at work.

What size lunch box does an adult need?
Around 1000 to 1200ml covers most adult lunches. The Core and the 3 compartment silicone bento are both 1200ml, and the 5 compartment bento is 1100ml.

Can I microwave an adult lunch box at work?
All our silicone bentos (3 compartment, 5 compartment and Round) are microwave, oven and air fryer safe, so you can reheat in the same box. The Core is stainless steel, so it can't go in the microwave.

Are Spixal adult lunch boxes leakproof?
Yes. The 3 and 5 compartment silicone bentos seal around every section, the Round Bento has a leakproof seal, and the Core's silicone-sealed lid makes the whole box leakproof and airtight.

Do you sell a lunch box with a bag for adults?
Yes. Our adult lunch kits and lunch bag sets pair a Commute insulated bag with bentos and snack boxes, or you can choose the bag and lunch box separately.

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