Hot Cold Double Wall Acrylic Liner, Foam Insulated Thermal Tumbler 16 oz. - Matte Black finish with Gray Lid Double Wall Acrylic Inner Liner, Foam Insulated Thermal Tumbler. Enjoy up to 3 hrs Hot or 6 hrs Cold use. Stainless Outer Wall, Black Acrylic Inner Liner Wall. MatteBlack Finish painted exterior and rubber skid grip base. Press fit swivel seal lid with silicone gasket. Slide to open for sip or straw insertion. Dimensions: 2.75" base diameter, 3" fill mouth opening, 7.5" height Hand Wash Recommended, due to Individual Dishwasher Temperature and Abrasiveness Variations that may cause damage to the exterior paint finish and plastic components of the tumbler.