FIFTY/FIFTY ( V18001BK0) Vacuum-Insulated Bottle, Black - 18 oz Capacity 18 ounce wide mouth style High quality vacuum insulation keeps liquids hot or cold for hours Double-Wall technology prevents condensation and keeps outside of bottle at a comfortable temperature Lightweight 18/8 stainless steel is 100 percent recyclable Stainless steel construction requires no liner and will not retain odor or taste