Explaining how caloric intake translates into weight gain is simplified with this graphic and informative display. The jar contains approximately 1 lb. of gooey, yellowish simulated fat. which represents the amount of weight a person would gain in one week if they consumed an extra 500 calories each day. Information on the back of the jar shows how much weight a person could gain in one year as a result of eating certain foods on a dally basis. 4.5 x 7.5 inch.