【Innovative Design】: The portable insulated lunch box is equipped with an air valve that can be easily opened and closed with just a press. It ensures an airtight seal and maintains freshness through continuous negative pressure 【Durability】: The bento box is made of PP, silicone and high borosilicate glass, ensuring durability and long term use 【High Temperature Resistant】: The high borosilicate glass lunch box is made of high borosilicate glass and can withstand temperatures from -20°C to 400°C, suitable for high and low temperature environments 【Stable and Safe】: The design of the meal prep container ensures stability and prevents slipping or displacement when placed on an inclined surface. It is also heat resistant and safe to handle 【Application】: Each package includes a fresh keeping box, which is great for dining out and going to work, and can be used in the microwave and refrigerator Specification: Material:PP Silicone High Borosilicate Glass Size Chart:10.9cmx10.9cmx6.5cm/4.29inchx4.29inchx2.56inch,Capacity:350ML Package Includes: 1 Portable Insulated Lunch Box Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.