18/8 Stainless Insulated Travel Thermal Tumbler - Double Wall - 18oz. Capacity - Graphite Durable Thermal Tumbler Travel Companion with Lid. Keep your liquids warm and secure on the go. 18/8 Stainless Steel Exterior & Interior, Foam Insulation in-between the Double Wall body. Press Fit Lid with Stainless Drink Rim, Sealable Sliding Tab, & Silicone Gasket Seal. BPA Free For Hot or Cold Beverage Insulation. Enjoy 6 hrs. Cool / 3 hrs. Warm. Hand wash. (dishwasher temperatures & abrasiveness vary) Not for microwave or freeezer use.