nsulated Serving Bowl is for preservation of Hot & Cold Cooked foods. It is a table/serving/storing ware with insulation to control any heat/cold transfer from inside to outside for a reasonable length of time and vice versa. Keeps liquids hot/cold for up to 12 hours. Double walled with vacuum insulation. BPA -free product. Copper coating inside for better heat retention. Type 304 Stainless Steel material allows the body to be nearly rust free. Preserve Taste Palazio interior is 100% Stainless Steel ensuring no taste is transferred or lost so your food remains fresh & delicious.