Thermosâ„¢ vacuum insulation technology for maximum temperature retention, hot or cold.Lid made with BPA free Eastman Tritanâ„¢ copolyester to resist stains and provide durability.Built-in tea hook, easily holds tea bags or most loose leaf infusers.Durable stainless steel interior and exterior.Dishwasher durable, top rack recommended.Keeps hot for 9 hours.Keeps cold for 20 hours.16 oz.Compatible with most single cup coffee makers.Fabric/Material: Stainless Steel, Eastman Tritan Copolyester. Colors shown are computer simulations of material colors.