18/8 Stainless Travel Thermal Tumbler - Vacuum Insulated Double Wall - 16oz. Capacity - Brushed Stainless With a Simple Twist the 360 Degree Lid Securely Seals and Is able to Drink or Pour from in Any Direction. 18/8 Stainless Steel inside and out, Vacuum Insulated Double Wall body. Enjoy 12 hrs. Cool / 6 hrs. Warm. Screw on Threaded Lid & Silicone Gasket Seal. BPA Free Dimensions: 2.75" base diameter, 2.25" mouth opening, 9" height (with lid) Hand wash. (dishwasher temperatures & abrasiveness vary) Not for microwave or freeezer use.