The copper-coated inner wall for superior insulation will keep drinks hot or cold for an extended amount of time.Use the Thermal Mug Ice from LifeVenture for running, cycling, walking and travelling.Double-Wall Vacuum Insulated - Keeps drinks hot for 6 hours or cold for 12 hoursLeakproof screw-on lid with pressure release chamberBPA-Free - Less harmful to wildlifeThermal MugHigh-quality food-grade 18/8 stainless steelHard-wearing outer finish - copper coated inner wall for superior insulation to keep drinks hot or cold for longerDimensions: 70 x 70 x 164mmCapacity: 300mlWeight: 262g