Durable foam construction makes hinged lid containers a perfect lunchtime or dinnertime choice. Containers are insulated to maintain food temperatures at their tastiest. Push-in vents help to keep products fresh and crispy. Excellent for use with both hot and cold foods. Dual Tab Lock. Food Container Type: Hinged Lid Container; Material(s): Polystyrene; Food Container Material Type: Foam; Color(s): Black.