NO MORE "SELF STIRRING MUG" WORDINGS (US MARKET ONLY). NO NEED TO TELL THE WORLD THAT YOU ARE USING SELF-STIRRING MUG. DOUBLE LAYERED STAINLESS STEEL (Blue Color, 450ml/15.2oz) No need for a stirring spoon. Just press the button on the handle to do self stirring. Suitable for lazy tea, coffee user both at home or office. Sealed mug cover, no need to worry about liquid splashing. Can be used for both hot or cold drinks. High-quality stainless steel and food grade plastic made, safe and durable.