Updated to feature a copper lining and new vacuum sealed lid, the Mizu V10 34oz Bottle provides 20% more efficient and overall better thermal retention than conventional insulated bottles. In turn, this technology makes the V10 ideal for crispy-cold water or hot coffee. A hardy rope handle makes for easy carrying, or allows the bottle to be fastened to the outside of your pack, should you be tight on space or desire quick access to your hydration.