Thermostone® dishes have been immaculately designed to allow you to take meals straight from the oven to the table for serving. Cooking can be enjoyable easy and fun, and your dishes will be delicious. It allows you to take prepared meals on-the-go easily. All products in this series are made of premium durable stoneware, resistant to high temperatures and discoloration. The lid’s soft silicone seal and air release vent create a totally leakproof and airtight seal. This allows to transport food safely and enjoy its unique flavor even after a long journey. Pop open the air release vent for quick reheating in the microwave. Pop the air release vent closed for freezer or fridge storage. They can be used in the oven. Before putting in the oven, remove the lid.