Insulated Lunch Box with 304 Stainless Steel Inner Tank and Multi-Channel Silicone Seal

This insulated lunch box is built around a multi-channel compartment system with a sealing silicone ring at each interface, supporting leak-proof, heat-preserving and fresh-keeping performance. The 304 stainless steel inner tank provides a non-toxic and environmentally friendly food-contact surface, while the high-density PU foam insulation sits close to the stainless steel and PP shell to help food stay warm. The outer PP shell has a soft, delicate feel, is anti-pollution and easy to clean, and can be used in a microwave oven. Colours include green, blue, pink and black, and you can choose from 2, 3, 4 or 5 grid layer capacities to match your needs.

Features and Construction

The lunch box combines a stainless steel inner tank, PU foam insulation, a PP outer shell and silicone sealing rings. Each element supports the practical functions of leak resistance, temperature retention and freshness, while the cutlery compartment and dish cover add everyday convenience.

Material and Build

The inner tank is made of 304 stainless steel, described as non-toxic and environmentally friendly, which makes it suitable for holding rice and other foods. The shell is wrapped in PP material that is soft, delicate, anti-pollution and easy to clean. High-density PU foam insulation is positioned close to the stainless steel and PP shell to help maintain temperature. A sealing silicone ring is integrated at the compartment interface as part of the multi-channel design.

Size and Practical Fit

Layer capacity options are 2 grid, 3 grid, 4 grid and 5 grid, so you can select the configuration that matches your portion requirements. The lunch box also includes a cutlery compartment for storing utensils. Exact dimensions are not stated in the source text and are listed only as shown in the images, so please refer to the listing visuals for size guidance before ordering. Colour choices are green, blue, pink and black.

Uses and Placement

This lunch box is intended for carrying meals to school, work or other daily settings. Its insulated construction and compartment layout support practical meal transport, while the dish cover and cutlery compartment add usability during eating.

Event or Professional Use

The Japanese-style lunch box with a cutlery compartment is described for children's school use, and the same practical format suits workplace lunches or other daily meal carrying. The multi-channel sealing design helps reduce leakage between compartments, and the PU foam insulation assists with keeping food warm until a break period. The outer shell can be used in a microwave oven, which supports reheating where facilities are available.

Everyday Home Use

At home, the lunch box can be used to prepare and portion meals in advance. Different layer capacities allow you to choose a 2, 3, 4 or 5 grid layout depending on the meal. Hot water can be added between the stainless steel and plastic layers to help maintain temperature. The PP shell is easy to clean, and the silicone sealing ring helps keep compartments separate during transport.

Benefits and Buying Value

The main practical benefits come from the combination of a stainless steel inner tank, PU foam insulation, a microwave-safe PP shell and silicone-sealed compartments. These features support leak-proof, heat-preserving and fresh-keeping use, with layer options to suit different meal sizes.

Reuse and Low Maintenance

The lunch box set is designed for repeated daily use rather than single-use packaging. The PP shell is anti-pollution and easy to clean, and the 304 stainless steel inner tank can be wiped or washed as needed. Keeping the silicone sealing ring correctly fitted at the compartment interface supports the leak-proof design. The plastic shell is suitable for microwave oven use, and hot water can be added between the stainless steel and plastic layers for temperature retention.

Why Choose This Product

Choose this lunch box if you want a compartmented meal container with a 304 stainless steel inner tank, PU foam insulation and a multi-channel silicone-sealed design. It offers 2, 3, 4 or 5 grid layer capacities, a cutlery compartment and a dish cover that can support a mobile phone. Colours include green, blue, pink and black. Size details are provided as shown in the listing images rather than as fixed measurements.