This Fifty/Fifty 18oz stainless steel vacuum-insulated bottle keeps liquids hot or cold all day. The slim profile fits easily in your purse or backpack and is GREAT for cold brew or iced coffee. It's the perfect size to bring for a full day of classes or work. This bottle is non-leaching, recyclable, and will not retain taste or odor. Even better, the double wall technology prevents condensation on the outside of the bottle. It will become your favorite!