The D.KADI 3.6L Vacuum Flask is a large-capacity thermal container designed for long-lasting temperature retention and travel use.Key Specifications & Performance capacity: 3.6 Liters.Material: Constructed with SUS 304 food-grade stainless steel interior for durability and corrosion resistance.Temperature Retention: Features double-wall vacuum insulation.Hot: Keeps beverages hot for some hours.Cold: Retains cold temperatures for some hours