Vacuum Insulated Lunch Box

Jianyang products are designed specifically for consumers who value durability, stylish appearance, and a healthy lifestyle. Vacuum insulated lunch boxes provide you with modern dining containers, allowing you to stay hydrated and enjoy delicious food whether you are outdoors or in the gym, while always maintaining a pure and refreshing taste.

Product Features

Vacuum Insulated Structure for Long-lasting Temperature Retention

The 400 ML Vacuum Insulated Lunch Box adopts double-wall vacuum insulation technology to reduce heat transfer and maintain food temperature for longer periods. It helps keep meals warm or fresh while preserving the original taste and quality.

100% Leak-proof Sealing Design

The airtight sealing structure prevents liquid leakage during transportation. Users can safely carry soups, snacks, and meals in backpacks or lunch bags without worrying about spills.

Premium 304 Stainless Steel Construction

Made of food-grade 304/18-8 stainless steel, this insulated lunch box offers excellent corrosion resistance, durability, and safe food contact performance for daily use.

Practical Internal Organization

The lunch box includes a stainless steel fork and adjustable inner partition, allowing users to separate different foods and enjoy a more convenient dining experience.

Plastic-free Sustainable Design

The stainless steel construction reduces the use of plastic materials and provides a reusable food storage solution for consumers who value sustainable lifestyles.

Working Principle

The Insulated Lunch Box works through a double-wall stainless steel structure with a vacuum layer between the inner and outer walls. The vacuum environment reduces heat transfer caused by conduction and convection.

This insulation technology helps maintain food temperature for longer periods while keeping meals fresh. The stainless steel inner wall also prevents direct contact with plastic materials and supports safe food storage.

Applications

The Vacuum Insulated Lunch Box is suitable for various daily and outdoor food storage applications.

Office Meals

Designed for professionals who need convenient and healthy meal containers during working hours.

Outdoor Activities

The compact and leak-proof design makes it suitable for camping, hiking, picnics, and travel.

School and Daily Use

The lightweight structure and practical accessories make it a convenient choice for students and family users.

Fitness and Healthy Lifestyle

Ideal for users who prepare balanced meals for gyms, sports activities, and personal nutrition plans.

OEM & ODM Customization

Jianyang provides flexible OEM and ODM services for global brands, wholesalers, and retailers. With an experienced R&D team, we support customers from initial concepts to mass production.

Available customization options include:

With professional design and manufacturing capabilities, Jianyang helps customers develop vacuum insulated lunch boxes that meet different market requirements.

Quality Control

Jianyang applies strict quality control procedures throughout the production process to ensure stable product performance and consistent quality.

Raw Material Inspection

All stainless steel materials are inspected before production to ensure they meet food-contact requirements.

Vacuum Performance Testing

Each product undergoes vacuum integrity inspection to ensure reliable insulation performance.

Leak-proof Testing

The sealing structure is tested to prevent leakage during transportation and daily use.

Surface Quality Inspection

Products are checked for paint adhesion, polishing quality, and appearance consistency before shipment.

Final Product Inspection

Every shipment receives a complete inspection covering product assembly, accessories, and overall performance.

Specifications

Why Choose Jianyang as Your Vacuum Insulated Lunch Box Supplier?

Experienced Stainless Steel Drinkware Manufacturer

Founded in 2008, Yongkang Jianyang Metal Co., Ltd. specializes in stainless steel drinkware and food containers. Our integrated production capabilities support reliable product development and manufacturing.

Strong OEM & ODM Development Ability

With a professional R&D team and continuous product development capability, Jianyang helps customers transform ideas into market-ready products.

Reliable Production Capacity

Our 20,000-square-meter production facility and skilled manufacturing team provide stable production capacity for bulk orders and customized projects.

Strict Quality Management System

More than 30 QC inspectors monitor production processes including raw material inspection, insulation testing, leak testing, and final inspection.

Global Compliance Support

Jianyang products comply with international food-contact requirements and the factory has passed BSCI, SEDEX, WCA, ISO9001, ISO14001, and RCS audits.

FAQ

Q1: What material is used for this vacuum insulated lunch box?

The lunch box is made of food-grade 304/18-8 stainless steel, providing durability, corrosion resistance, and safe food storage performance.

Q2: Is this vacuum insulated lunch box leak-proof?

Yes. The product features an airtight sealing design that helps prevent leakage during carrying and transportation.

Q3: Can Jianyang provide OEM and ODM services?

Yes. Jianyang provides OEM and ODM solutions including logo customization, color options, packaging design, and product development.

Q4: What is the capacity of this stainless steel lunch box?

This model has a 400 ML capacity with a compact size of 92 × 127 mm and a lightweight design of approximately 280 grams.

Q5: Does this lunch box contain plastic materials?

This model follows a plastic-free design concept and mainly uses stainless steel components together with food-grade accessories.