Work Series Beverage Bottle Patented Thermos vacuum insulation technology for maximum temperature retention, hot or cold Unbreakable stainless steel interior and exterior Cool to the touch with hot liquids, sweat-proof with cold Big 40 oz capacity Unbreakable stainless steel cup Capacity: 1.25 qt/1.2 L Keeps hot: 24 hours, Keeps cold: 24 hours