Pactiv Evergreen EarthChoice Hinged Lid Container has a SmartLock® system featuring a tight, audible click closure that helps ensure maximum food freshness. This container resists grease and moisture to preserve the flavor and consistency of food. Convenient food containers resist leakage. Microwaveable up to 250 degree Fahrenheit. Textured sidewalls allow for more secure handling. Conveniently stackable containers conserve storage space.