Explaining how calorie intake translates into weight gain is simplified with this graphic and informative display. The plastic jar contains approx. 1 lb of gooey simulated fat which represents the amount of weight a person could gain in 1 week by consuming an extra 500 calories each day. Information on the back of the jar shows how much weight a person could gain in 1 year as a result of excess calories. 5" x 6 ½".