Hot Cold Stainless Steel Tumbler with Silicone Grip Sleeve - Double Wall Foam Insulated, 16oz. - White Stainless Steel Outer Shell with Silicone Grip Sleeve, Plastic Inner Liner with Foam Insulation in-between. Double wall foam insulation helps maintain your desired drink temperature. Up to 4 Hours Cool, 2 Hours Warm Push on Swivel Closure Seal Lid with Silicone Gasket. Easy to Dissasemble for cleaning. BPA Free. Dimensions: 2.75" diameter, 2.5" mouth opening, 9" height (with lid) Hand wash recommended. Not for microwave or freeezer use.