This 3 in 1 double insulated food warmer set contains 15L, 26L and 36L sizes in one package, it is heavy duty with commercial quality. Crafted with food-grade 201 stainless steel inside, PU foam insulation in the middle and tough PE outer for exceptional durability, impact and heat resistance, this warmer keeps food hot for 6-8 hours and cold for 8-12 hours without electricity and without emitting any harmful substances. It comes with airtight stainless steel lock clips and a tight-sealing lid to prevent spills and lock in temperature and aroma. Perfect for catering businesses, restaurants, hotels, weddings, kitchen parties, send-offs, food vending and large family events, with 15L for 10-15 people, 26L for 20-30 people and 36L for 30-45 people. Ideal for pilau, biryani, rice, ugali, soup, tea and ice.