Double Wall Stainless Steel Thermal Travel Bottle, 20oz. Capacity 20oz. Double Wall Stainless Steel Insulated Thermal Bottle. Enjoy Cool or Warm. Brushed Stainless exterior & interior body, Lid and Base. Threaded & Insulated Lid . BPA Free Elegent, yet durable design incorporating excellent fit and finish from high quality grade materials. Mouth Opening large enough for ice cube insertion and easy cleaning, while narrow enough for sipping. Dimensions: 3.1" base diameter, 1.3" mouth opening, 12.25" height (with lid) Hand Wash Recommended, due to Individual Dishwasher Temperature and Abrasiveness Variations that may cause damage to the lid seal and plastic internals of the lid insulation.