Easy to clean food-safe materials - stainless steel inside and plastic outer insulation Helps retain temperature (hot or cold) and nutritional value of food for up to 6 hours Easy to store - the serving dishes fit in each other Approx. volume: 800ml, 1200ml, 1600ml and 2500ml. Contains 4 serving dishes with lids. Capacities: 0.8L, 1.2L, 1.6L, and 2.5L.