Rectangle Microwave Safe Glass Food Storage Container Lunch Box Airtight Glassware Glasslock Made from premium grade glass and recyclable material that is safe for the environment - Silicone resin sealant lid cover to ensure durability and sealing performance - Microwaveable, can directly put into the microwave, suggest to take off the cover for longer product lifespan - Keeping food fresh in the fridge as well as strong heat resistant - Anti-leak with 360-degree upside down and airtight hole to reduce the pressure in the container or keep the food warm - Polypropylene rubber seal ring that can be detachable and wash off easily