花火 4 I received my cook set in good condition. The thickness of the pan and the weight is different from Tfal. Wherein Tfal is thicker and much heavier but the price is double the price of Thermos. The surface of the pan is not curved. Since I just started to use it. I can't say anything about durability. I think the price is good.Cooking: Since the pan is flat, all the oil went to the side. And it takes time to cook than my usual pan. I'm using IH in high level heat.