The set contains four insulated hot pots with capacities of 1000ml, 1500ml, 2500ml, and 3500ml. These casseroles are designed with double-walled insulation to keep food hot and fresh for several hours. They are made with a stainless steel interior and a plastic exterior. The set is suitable for serving various dishes like rice, curries, and stews and is often used for family meals or parties.