The Thermos brand is well known as the quality and performance leader in insulated food and beverage products. The Stainless King series creates a new chapter in Thermos" storied history with a modern line that blends our newest technology with a dash of the past. The Stainless King Food Jar has TherMax double wall vacuum insulation for maximum temperature retention, hot or cold. The unbreakable stainless steel interior and exterior keeps drink cool to the touch with hot liquids and sweat proof with cold liquids. The Leak Proof Mug has a Capacity of 16-ounce/.47L