Material: Stainless steel Bottom Construction: There are two types of pot bottoms: single-layer and three-layer, with aluminum sandwiched in between. The three-layer structure provides excellent heat transfer, allowing for even heating. Compatible Heat Sources: Can be used with IH cookers, gas stoves, halogen heaters, and sheathed heaters. Cooking Methods: Broadens the range of cooking possibilities, including boiling, steaming, simmering, and stewing. Size: Diameter 28cm Accessories: Lid, steamer basket Notes before purchase: The size is measured by hand, so there may be slight differences from the actual product. Please understand. The actual product may differ slightly from the image due to lighting conditions, so please refrain from purchasing if you are particularly concerned. Used only once to boil water.