SEIDO Stainless Steel Lunch Box — 3 × 800ml
Leakproof stainless steel meal prep containers with quad-lock glass lids. Microwave, oven, freezer and dishwasher safe. 100% chemical free.
- 304 food-grade stainless steel
- 3 × 800ml containers with glass lids
- Quad-lock silicone seal — leakproof
- Microwave, oven (250°C), freezer (-40°C) and dishwasher safe
2-year warranty
Specifications
| Material | 304 food-grade stainless steel with glass lids |
| Capacity | 3 × 800ml |
| Oven Safe | Up to 250°C |
| Dishwasher Safe |
Features
- 304 food-grade stainless steel
- 3 × 800ml containers with glass lids
- Quad-lock silicone seal — leakproof
- Microwave, oven (250°C), freezer (-40°C) and dishwasher safe
- Stainproof and odour-resistant
- Steam vent in lid for microwave use
What Customers Say
Finally ditched the plastic
These replaced all our plastic containers. No staining, no lingering smells, and genuinely leakproof — I've had curry in my bag with no spills. The glass lids are a great touch.
Katherine D. — 15 January 2025
Brilliant meal prep containers
Use these for weekly meal prep. They go from freezer to oven without issues. Food tastes better stored in steel than plastic — no weird aftertaste. Worth every penny.
Andrew M. — 30 November 2024
Perfect school lunchboxes
Bought for my kids' packed lunches. They're virtually indestructible — been dropped multiple times and just bounce. The quad-lock lids actually seal properly unlike every plastic box we've tried.
Priya S. — 5 February 2025
Frequently Asked Questions
Are the lunch boxes leakproof?+
Yes. Each container has a quad-lock lid with a food-grade silicone seal that creates a watertight closure. Soups, curries, and dressings stay contained during transport.
Can I microwave stainless steel lunch boxes?+
The stainless steel body cannot go in the microwave, but the glass lids (with steam vent open) are microwave safe. Transfer food to the glass lid or a microwave-safe dish for reheating.
Are the containers freezer safe?+
Yes. The containers are safe from -40°C to 250°C. You can freeze batch-cooked meals and reheat them directly in the oven.
Will the containers stain from curries or tomato sauce?+
No. Unlike plastic, stainless steel is completely stain-resistant and odour-resistant. Curries, tomato sauces, and turmeric-based foods wash off without leaving any marks.
How many meals does an 800ml container hold?+
An 800ml container fits a generous single adult portion — a full lunch of rice with protein and vegetables, a salad bowl, or a pasta dish.
Related Reading
Meal Prep with Stainless Steel: The Plastic-Free Guide
Ditch the plastic containers and switch to stainless steel for healthier, more sustainable meal prep. Here is everything you need to get started.
Stainless Steel Food Storage: The Complete Safety Guide
Is stainless steel safe for food storage? How does it compare to plastic, glass, and silicone? Everything you need to know about safe, chemical-free food storage.
The Ultimate Back-to-School Lunchbox Guide
Pack healthier, waste-free lunches with stainless steel containers. Practical tips for parents who want to ditch plastic without the hassle.