Our products has 3 shapes, round, square and rectangles. It can bear the temperature  -40℃ ~ 400℃, thermal shock ≤120℃, it can be used in the microwave and oven, also in the dishwasher and refrigerator, but it can not use in the direct fire. This product can use different lid, lid with vent hole, silicone lid, lock lid and lid with cutlery, all of them are available.