The main body has a heavy, five-layer construction of stainless steel and aluminum, and the lid consists of two layers: heat-resistant tempered glass and stainless steel. You can take it off the heat and continue cooking with its heat retention, which drastically reduces cooking time and saves on both energy costs and time. It's very convenient as it can be used for various cooking methods such as boiling, simmering, stir-frying, deep-frying, and steaming. Size: Inner diameter: 20 cm Outer diameter: Approximately 23 cm Height: Approximately 9.5 cm (excluding the lid) It comes with a booklet of 100 "leave-it-and-forget-it" recipes. The outer box shows some discoloration and tears due to aging, but I believe the contents are unaffected. Please be aware that this item has been stored at home, so those who are overly concerned about condition should refrain from purchasing. It will be packaged simply and shipped.