Joyoung 4-Layer 316L Stainless Steel Multi-Layer Lunch Box Microwave Safe for Students and Office Workers

Multi-layered design with independent compartments to prevent flavor mixing

Microwave safe with instructions to open silicone vent valve before heating; recommended to remove stainless steel inner bowl and use PP bowl for microwave heating, heating time not exceeding 3 minutes

Leak-proof sealing with built-in silicone sealing ring

Silicone rubber vent valve for pressure balance and easy opening

Double-layer hollow insulation design for heat protection and better temperature retention

Smooth and easy-to-clean 316L stainless steel inner container

Detachable double layers for convenient cleaning

Thickened insulated bag included for portability and convenience

Hidden handle design for easy carrying without occupying space

Anti-slip texture for effortless opening and closing

Suitable for office meals, picnics, camping, and daily use

Do not place the lunch box sideways or upside down to avoid leakage

Avoid storing hot liquids above 80°C in the lunch box

Safe and stable material with no odor, suitable for food storage and reheating

Read the instruction manual before use

Open the silicone vent valve about 4mm before microwave heating to allow air circulation

Press down the vent valve after heating to prevent leakage

Product images are for reference only; actual product may vary due to upgrades or manufacturing differences

Product performance and specifications are based on laboratory measurements and may have slight variations

The product has been professionally inspected before shipment

Joyoung is recognized as the pioneer of the first space meal preparation, as reported by China News on November 14, 2025

Customer support available for inquiries and assistance