Food storage containers

A lid for a food storage container, the lid comprising:

• a lid body defining a vent opening therethrough;
• a releasable cover disposed over the vent opening to impede air flow into the container through the vent opening until the cover is released, the releasable cover defining an evacuation opening and having a gripping surface for manually releasing the cover;
• a membrane that covers the vent opening until the cover is released;
• and
• a driving element connected to the membrane at one end and disposed within the evacuation opening at another end, the driving element being configured to lift the membrane from the vent opening when the cover is released.

A lid for a food storage container, the lid comprising:

• a lid body defining, spaced apart and extending parallel through the lid body, a vacuum sense opening, a ventilation channel, and a vent opening;
• a releasable cover disposed over the ventilation channel to impede air flow into the container through the ventilation channel until the cover is released, while enabling evacuation of the container through the vent opening before the cover is released, the cover defining an indicator opening;
• and
• a pressure-indicating protrusion in hydraulic communication with the container through the vacuum sense opening and defining a cavity therein, wherein the pressure-indicating protrusion contracts toward the vacuum sense opening in response to negative container pressure.