- Free from carcinogens (BPA Free). - Microban technology helps to suppress fungi and bacteria and ensure that the food container can protect your food from bacteria throughout the service life. - Warranty of the lid throughout the service life. - Special two-layer locking technology that prevents air from entering and exiting, so it is longer-lasting food preservation than conventional food boxes. - The lid is tightly attached, so water or liquid foods can be stored without spilling and not leaking. - Durable even in hot and cold temperatures up to -20 °C and 120 °C. - Microwave safe (Before putting the food container in the microwave, all 4 sides of the lid must be unlocked to release the air pressure). - Dishwasher safe. - Freezer safe.