Large Vented Chicken Roaster Combo Pack Black Base Clear Lid - Anchor 170/caseNature's Best Roaster utilizes advanced engineering techniques, resulting in a 40% reduction in oil based polypropylene resin, while providing a structurally stronger container. Contemporary design polypropylene lid is easily secured and will not crack like those made of polystyrene. Leak resistant lid fit eliminates the need to over wrap or tape. Double vents allow steam to escape freely and anti fog material formula reduces condensation buildup.