Big Bento Lunch Box — 316L Stainless Steel, 3 Compartments, Leak-Proof

Upgrade to the Big Bento Lunch Box from Misanbroo — a premium 316L stainless steel bento lunch box designed in Finland and built to carry everything from a primary school lunch to a hearty adult meal. Three generous compartments and a leak-proof silicone seal make this one of the most practical big bento lunch boxes you can buy in NZ.

At 22 × 22 × 6.5 cm and 1,200 ml, it's a genuinely large bento lunch box that still slips neatly into a school backpack, laptop bag or shelf fridge. If you've been searching for a single bento box that suits kids, teens and adults, this is it. Why 316L stainless steel?

Most stainless steel lunch boxes use 304 — a good, food-safe grade. We went a step further. 316L stainless steel contains added molybdenum, which gives it much higher corrosion resistance against acidic and salty foods — think tomato pasta sauce, citrus, vinaigrettes and soy-based dressings. 316L is the same grade used in medical and marine-grade applications.

- Anti-bacterial surface — 316L has been shown to inhibit E. coli growth, keeping your lunch hygienic between uses.
- Rust and stain resistant — no black pitting or rust marks after months of daily packing.
- BPA-free, plastic-free interior — the entire food-contact surface is pure stainless steel.
- Built to last — a stainless steel bento lunch box that handles school bags, hot dishwashers and active commutes for years, not months. Key features

- 3-compartment bento layout — keep your main, protein and side separate. No more soggy sandwich from leaking curry. One of the best compartment lunch boxes for organised meal prep.
- Leak-proof silicone seal — tested with wet foods like yoghurt, hummus, salad dressing and dips. (Full water submersion isn't recommended — the seal is for food, not a canteen.)
- Generous 1,200 ml capacity — big enough for a full adult lunch, roomy enough for a teenager's appetite, and easy portion control for primary-aged kids.
- Stackable, slim profile — at only 6.5 cm tall the Big Bento Lunch Box fits easily in school backpacks, commuter bags and fridge shelves.
- Gentle hot-water warm-up — pour hot water (not boiling) into the plastic outer tray to warm the food from underneath when there's no microwave at work or school.
- Finnish design — from Misanbroo, with the clean, functional Nordic kitchen aesthetic.
- Dishwasher safe tray — top-rack dishwasher safe for the 316L stainless steel tray; hand-wash the lid to preserve the silicone seal. A bento lunch box for kids and adults

This is a versatile stainless steel lunch box families return to because it genuinely works for three audiences:

- Adults commuting to the office or uni — 1,200 ml is a proper lunch, not a snack. The three compartments keep your salad, protein and carbs distinct. A premium bento lunch box for adults that survives daily handbag life.
- Teens packing a high-school lunch — the 316L stainless steel shrugs off locker bumps and rough school bags. Easy to open one-handed between classes.
- Primary school kids aged 6 — a large enough school lunch box to last the whole day, with a lid small hands can open on their own. A great kids lunch box with compartments for variety-pack lunches. Care, cleaning & reheating

- Reheating: pour hot water (not boiling) into the bottom plastic tray and sit the stainless insert on top to warm your meal gently — perfect for offices and classrooms without a kitchen.
- Do not microwave the stainless tray on its own: metal will arc. If you have microwave access, transfer food to a microwave-safe dish first.
- Dishwasher: top-rack safe for the 316L stainless steel tray.
- Lid & silicone seal: hand-wash only to extend the seal's life. Avoid bleach and abrasive scourers.
- Drying: towel-dry the stainless tray to keep the finish bright. Specifications

- Brand: Misanbroo (designed in Finland)
- Material: 316L stainless steel inner tray, silicone rubber seal, AS and PP outer components
- Capacity: 1,200 ml
- Dimensions: 22 × 22 × 6.5 cm
- Compartments: 3
- Leak proof: Yes (silicone seal, suitable for wet foods like yoghurt and dips)
- Dishwasher safe: Stainless tray yes; hand-wash the lid
- Microwave safe: No — warm food with hot water in the outer tray or transfer to a microwave-safe dish
- Suitable for: Kids aged 6 , teens and adults