SUPOR Insulated Lunch Box, 316L Stainless Steel Thermos, Large Capacity Bento Box for Office Workers, Multi-Layer Extra-Long Student Meal Container

12-hour heat retention at 73°C (tested with 95±1°C water in controlled environment 20±2°C)

6-hour heat retention maintaining food temperature significantly above national standard (80°C water retention above 70°C)

360° full vacuum chamber with patented “Temp. Locker” locking shield technology

Six-layer vacuum insulation wall including copper plating and high vacuum layers

Double-layer anti-scald design for safe handling

Seamless one-piece inner pot for enhanced hygiene and corrosion resistance

1-second quick open lid with ergonomic pinch design, suitable for children

Large 112mm wide mouth for easy filling and cleaning

Triple-seal leak-proof food boxes with spiral sealing lids and silicone valves

Independent food boxes for vegetables, meat, rice, and soup with rated insulation performance:

Ergonomic handle design with hidden handle for easy carrying

Detachable silicone ring for thorough cleaning

Included stainless steel utensils with silent and anti-slip silicone base

Market leading sales in lunch box and vacuum pot category

Designed for outdoor and office use to keep meals hot and fresh

Health-friendly materials suitable for mother and baby use

Dimensions vary by model and food box size, e.g., main pot approx. 176mm x 125mm

Insulation data sourced from SUPOR laboratory testing under controlled conditions.