Double Wall Vacuum Insulated Stainless Steel LIFE Flask BPA Free Thermos Travel Water Bottle Sipper 500 ml - Hot and Cold 12 Hours. Interesting and Genius Design Makes this Bottle Great for use, The Classic Flask is all About Carrying the Best of the Best with You. Printed with Modern n Unique Designs to make the Special Appearance adding to the Style And Quality of the Flask. The Flask is made of Stainless Steel and Carries a Strainer for Leaf Tea and other Herbs, Light Weight, 500 ml, Great Color Combination and Vacuum Air tech. to Utilize the Best of the Inside Vacuum to keep the Drinks Hot and Cold.Vacuum Flask beverage bottle, Bringing Elegance To Your Home. By using this innovative vacuum insulation technology, vacuum cup keeps air sucked out and create a vacuum between the double walls, minimizing the effect of outside temperature.