Double walled with vacuum insulation for temperature retention of your beverage 2-in-1 style easily converts from a water bottle to a travel tumbler Comes with two interchangeable lids Bottle has a screw on lid with black Silicone ring Tumbler has an Acrylic screw on lid with matching coloured flip up spout Tumbler holds up to 473 ml. (16 oz.) Bottle holds up to 600 ml. (20 oz.) BPA free and FDA compliant For use with hot and cold beverages Individually retail packaged