This rectangle shaped insulated carrier is 12 1/2 inches by 16 1/2 inches when flat. It expands in height to carry a 9 inch by 14 inch oblong cake pan or be flexible to carry other shaped pans that can fit inside of it. It's insulated to help keep your food either hot or cold when transporting it. It opens wide to allow for easy placement of food container and has a tie closure to keep everything secure to provide ease in transporting your food container. The carrier's outer fabric and matching lining are made of cotton fabric and the insulation is a polyester batting making it machine washable in warm water. It comes in a wide variety of fabric color choices.