10.5 x 8 inch / Extra-Large / Oval / Roaster / Microwavable / Black / Base / Clear / Lid/ Anti-Fog / Polypropylene / Combo Pack. . Holds whole chickens up to 6 pounds. Natures Best Roasters utilize advanced engineering techniques, resulting in a 40 percent reduction in oil-based resins made of a unique blend of polypropylene and natural resources, while providing a structurally stronger bases. The contemporary design polypropylene lid is easily secured to the base and will not crack like polystyrene. Leak-resistant lid eliminates messy spills and the need to over wrap with film or tape. Unique venting allows steam to escape and the integral anti-fog material formula reduces condensation for maximum food visibility. Raised ridges in the base drain juices away from the chicken to maintain freshness. pre-cooked weight