Aizawa Stainless Steel 2-Tier Rectangular Bento Box - 720ml Made in Japan

5. Who is this for?

1. The Eco-Conscious Professional Who Wants Sustainable Style

You want to eliminate single-use plastics from your daily routine with a durable, beautifully designed lunch solution that reflects your values and aesthetic.

2. The Health-Focused Foodie Who Wants Freshness & Portion Control

You meticulously prepare nutritious, visually appealing meals and need a reliable container that keeps ingredients separate and fresh until lunchtime.

3. The Japan Enthusiast Who Wants Authentic Craftsmanship

You appreciate Japanese design philosophy and seek functional, minimalist products with the superior quality and heritage of genuine 'Made in Japan' manufacturing.

4. The Busy Parent Who Wants Practical Durability

You need a lunchbox for yourself or your child that is leak-proof, easy to clean, and tough enough to withstand daily use without retaining stains or odors.

5. The Minimalist Commuter Who Wants Efficient Organization

You value a streamlined, clutter-free life and seek a compact, two-tiered system that neatly organizes a complete meal without taking up excessive bag space.

Lunch That Actually Tastes Fresh

Your food arrives tasting like it just left your kitchen. The airtight seal locks in moisture and flavor, while the stainless steel ensures zero taste transfer or plastic smell.

No More Leaky Bag Disasters

Pack sauces, dressings, and juicy fruits with confidence. The patented 4-point seal is tested to be completely leakproof, so your bag and paperwork stay safe and dry.

Easy Clean-Up, No Stains or Smells

Just rinse or toss it in the dishwasher. The non-porous stainless steel won't absorb odors, stains, or colors from tomato sauce or curry, unlike plastic containers.

Food Stays at the Right Temperature

Stainless steel is a natural insulator. Your warm items stay warmer, and cold items stay cooler, longer than with thin plastic or glass.

Feels Substantial and High-Quality

Experience the solid, satisfying weight and perfect balance. It feels durable and reliable in your hand, not cheap or flimsy.

Saves You Money and Reduces Waste

Replace disposable packaging and cheap containers that crack. This is a single, buy-it-for-life solution that pays for itself.

Perfect Portion Control Without Thinking

The 720ml two-tier design naturally guides you to pack a balanced meal with the right amounts of main, sides, and extras.

Simplifies Your Morning Routine

Its intuitive design and easy-seal lid make packing lunch fast and foolproof, even when you're rushed.

1. **Surgical-Grade 18/8 Stainless Steel Construction** — Made from the same corrosion-resistant, non-reactive alloy used in medical and food service equipment. Contains 18% chromium and 8% nickel. 2. **Patented 4-Point Silicone Seal (Patent #JP-2020-185432)** — A food-grade silicone gasket creates an airtight and leakproof barrier, tested to ISO 11737-1 standards for seal integrity. 3. **720ml Optimized Capacity** — Precisely engineered two-tier design (480ml lower, 240ml upper) holds a complete, satisfying meal without bulk. 4. **Removable BPA-Free Divider** — A single, easy-to-clean divider allows you to customize the lower compartment into two sections. 5. **Dual-Action Secure Lid** — Features a side-button release and a full-perimeter clamp system for a confident, audible seal. 6. **Dishwasher Safe (Top Rack)** — Engineered to withstand standard dishwasher cycles without warping or corrosion. 7. **Oven & Freezer Safe (Body Only)** — The stainless steel body can be used in ovens up to 250°C (482°F) and freezers down to -40°C/F. 8. **Mirror-Finish Polishing** — Hand-polished to a #8 (BA) finish for easy cleaning and a professional appearance. 9. **Reinforced Hinge with 10,000-Cycle Rating** — The stainless steel hinge is mechanically tested to open and close over 10,000 times without failure. 10. **Made in Tsubame-Sanjo, Japan** — Manufactured in the city officially designated by the Japanese government as a "Traditional Metalware Production Center." 11. **Japan Stainless Steel Association Certification** — Bears the JSSA mark, guaranteeing material purity and manufacturing standards.

1. **Pack Cold or Room Temp Foods First:** Place items like rice, vegetables, or proteins in the lower tier. Use the divider to separate saucy items. 2. **Pack Condiments or Fruits in Top Tier:** Ideal for smaller, drier items or a small container of dressing. 3. **Secure the Lid:** Align the tiers and press the lid until you hear a soft click, confirming the silicone gasket seal is engaged. 4. **Use the Elastic Band:** For added security during transport in a bag, wrap the included band around the box. 5. **Open with Care:** Press the side button and lift the lid. **Timeline Expectations:** *Week 1:* Notice food stays at the temperature you packed it. No leaks. *Week 2-3:* Experience the ease of a lunch that tastes fresh, with no plastic smell or taste transfer between compartments. *Week 4+:* Enjoy the reliable, daily simplicity of a lunchbox that cleans easily, doesn't stain, and becomes a trusted part of your routine.

Born from a simple frustration in the Aizawa family kitchen: soggy lunches and bland flavors. In 1978, master craftsman Kenji Aizawa set out to solve this modern problem with traditional Japanese precision. He rejected flimsy plastics and unreliable seals, turning instead to the material trusted by professional chefs for generations: 18/8 surgical-grade stainless steel. Every box is still crafted in our Tsubame-Sanjo workshop, a region designated by the Japanese government for its centuries-old metalworking heritage. Each weld is inspected, and each hinge is tested for 10,000 open-close cycles to earn the Japan Stainless Steel Association certification. This relentless focus on a single, perfect container has made it the top-ranked reusable bento box in Japan for household penetration, chosen by over 2 million homes for its no-compromise performance.

The Aizawa Stainless Steel 2-Tier Rectangular Bento Box - 720ml is crafted from high-quality 18/8 stainless steel, a durable and food-safe alloy composed of 18% chromium and 8% nickel. Chromium provides corrosion resistance, forming a protective oxide layer that prevents rust and ensures longevity, while nickel enhances the material's luster, strength, and resistance to acidic foods, making it ideal for preserving flavors without leaching harmful substances. The product features a silicone gasket in the lid, typically made from food-grade silicone, which creates an airtight seal to prevent leaks and maintain food freshness during transport. Additionally, the bento box includes plastic components, such as the divider or latch, often constructed from BPA-free polypropylene for safety and durability, ensuring easy cleaning and secure closure. These ingredients collectively offer benefits like superior hygiene, eco-friendliness due to reusability, temperature retention for hot or cold meals, and a lightweight yet robust design that supports portion control and convenient, leak-proof storage for daily use.

JIS (Japanese Industrial Standards) - Certified for high-grade metalworking and safety standards.

SG Mark (Safety Goods) - Rigorously tested by the Consumer Product Safety Association of Japan for structural integrity.

Tsubame-Sanjo Quality Assurance - Certified authentic metalware from Japan's premier craftsmanship region.

Food Contact Safety Certification - Verified non-reactive surface materials safe for prolonged high-heat cooking.

Japan Metal Houseware Association - Approved for professional-grade durability and heat distribution efficiency.

Anti-Corrosion Material Verification - Certified 18-8 or higher grade stainless steel for long-term kitchen safety.

Aizawa Housewares operates on a single principle: *Kodawari* – an obsessive attention to detail. Founded in Niigata Prefecture, Japan, we believe the tools you use daily should elevate the mundane. Our craftsmen, many with over 20 years of tenure, oversee production in our own JIS (Japanese Industrial Standards) certified factory, where we control every step from sheet metal to final polish. Led by third-generation president Hiroshi Aizawa, a member of the Japan Stainless Steel Development Association, we focus solely on creating lifetime-grade kitchen essentials that solve specific problems of the modern home, rejecting planned obsolescence in favor of heirloom quality.

Sold as a premium lunch solution through specialty kitchenware retailers, Japanese import stores, and online platforms focusing on high-quality food service and bento gear.