Thermosâ„¢ vacuum insulation technology for maximum temperature retention, hot or cold.Durable stainless steel interior and exterior.Non-slip scratch-resistant base.Comfortable silicone rubber grip.Flip lid opens for drinking; snaps closed.Fits in most automobile cup holders.Keeps hot for 4 hours.Keeps cold for 8 hours.18 oz.Compatible with most single cup coffee makers.Dishwasher safe.Fabric/Material: Silicone Rubber Grip. Colors shown are computer simulations of material colors.