From manufacturer: The lid creates a vacuum when placed on a container ‒ keeping the food fresh longer and helping the food retain both heat and coolness.

Can be used to protect from splatter in the oven and the microwave.

Wash the lid in the dishwasher and use it again and again, as this helps you reduce the amount of plastic and aluminum foil you use.

A double-duty lid! Pressing it onto a rectangular food container in the IKEA 365+ series creates a vacuum that keeps your food fresh for longer – and in the microwave and oven it acts as a splatter guard.