ASD 304 Stainless Steel Insulated Lunch Box Large Capacity Three-Layer Portable Bento Box for Office Workers and Students RWS20H8WG-W

Includes stainless steel grid and PP heat-insulating boxes

12-hour heat retention with multi-layer vacuum insulation technology

High-temperature tail-free vacuum process for extended insulation performance

Multi-layer heat insulation design with vacuum layers to effectively block heat radiation and prevent temperature loss

Separate food compartments prevent flavor mixing

Leak-proof and airtight lids with pressure balancing valve for easy opening

Quick open and close lid lock for convenient use

Heat-insulating handles on inner bowls to prevent burns and facilitate carrying

Suitable for steaming and microwave heating (remove stainless steel inner bowl before microwaving; remove PP outer shell before heating stainless steel bowl)

Outer container can be used as a thermal cooker or ice bucket

Comes with a built-in spoon and non-slip handle for easy portability

1. Preheat inner container with boiling water

2. Fill empty small food boxes with boiling water before use

Tested in constant temperature laboratory at 20±2°C

Heat retention data measured at 6, 12, and 24 hours after preheating with boiling water

Inner food box temperatures maintained at approximately 70°C, 65°C, 50°C, and 40°C over time

Designed to keep food fresh and hot for up to 12 hours

Compact and lightweight design for convenient daily use

Ensures food safety and hygiene with high-quality materials and airtight sealing