You may know what is SANDWICH Bottom but have you ever heard of TRI-PLY pressure cooker? It means three Ply Material. Triply cooker is made of three-ply material which is basically three layers sandwiched together. Most often this is an inner layer of stainless steel, middle layer of aluminum and an outer layer of stainless steel. With triply cookware, you don't have to worry about hotspots and burns. The middle layer of aluminum helps in even heat distribution, the outer layer of steel makes the cookware compatible with all types of heat sources and the inner surgical steel layer ensures that your food has 0% contact with Aluminum which can be dangerous for health in the long run. If you are concern about your famility health and want to have healthy life, Pigeon Elite Shine pressure cooker is a great choice for you. Depending upon your need, we are also offering Elite Shine in differnt Litres 2,3,4 & 5 L.