"this sturdy flask/thermos bottle is vacuum-insulated to keep hot drinks hot and cold drinks cold for hours Made up of high quality stainless steel but cool to the touch with hot liquids. Special small neck to improve performance. Available in different capacity like 500ml, 750ml and 1000ml. The vacuum in between the double stainless steel walls locks the temperature of the liquid in and your beverage remains hot or cold for various hours." 500ml, 750ml and 1000ml.
