The clear lid is designed with anti-fog technology and is vented to allow steam to dissipate, keeping foods fresh and product visible to assure order accuracy. Stacking will not block the vents. Secure snap closure ensures freshness and eliminates spills when transporting. The 26oz capacity crack-resistant, cut-resistant black polypropylene base allows customers to eat right out of the container. Can withstand temperatures up to 230℉ when used under heat lamps, in warming units, and in microwaves.