Impactbonded aluminum bases provide fast even heating Safe for the stove oven broiler and dishwasher Long ergonomic handles provide a secure grip even with full heavy pans stay cool even when pan is hot and are doubleriveted by hand Fill lines make measuring easy and covers have straining holes that line up with pour spouts to drain liquids without having to use a separate colander High sides and narrow opening minimize evaporation during slow process of stock and soupmaking Heavygauge sloped bottom heats evenly makes stirring easier