Bonjour's insulated thermos flasks are filled with polyurethane (PU) using renowned German machines and technology. Princess & Esprit are designed with inner and outer steel. These thermo jugs are designed for hotel room service and restaurant table services for hot or cold water for long hours. Ideal for use in hospital & nursing services. Esprit is available in capacities 900ml, 1200ml and 1500ml. Princess is available in capacities 325ml, 500ml, 750ml, 1000ml, 1500ml & 2000ml,