There is no box or instruction manual. The size is about 28cm. Please check the images with the measuring tape. I've used it about two or three times after purchasing it. I tried to cook steak with it, but I couldn't use it well, and it stuck to the pan. There are stains from that time. I haven't used it for several years and have kept it stored away. The glass lid is also cloudy, but I will ship it as is. Please understand this before purchasing. 【High-Quality Stainless Steel】 This frying pan is made of durable stainless steel material and can withstand long-term use. 【Convenient Glass Lid Included】 It comes with a glass lid that allows you to check the cooking process, preventing steam from escaping and trapping in the flavor. - Included: Glass lid Thank you for viewing.