Stainless Travel Thermal Coffee Mug - Insulated Double Wall - 17oz. Capacity Durable Thermal Mug Travel Companion with Lid. Keep your liquids warm & contained on the go. 18/8 Stainless Steel Exterior, Plastic Inner Liner, Foam Insulation in-between the Double Wall body. Press Fit Lid with Stainless Drink Rim, Sealable Sliding Tab, & Silicone Gasket Seal. BPA Free Rubber Stripe for added Grip. For Hot or Cold Beverages. Enjoy 4 hrs. Cool / 2 hrs. Warm. Hand wash. (dishwasher temperatures & abrasiveness vary) Not for microwave or freeezer use.