Rover 420 ml copper vacuum insulated mug. Double-wall stainless steel vacuum construction with copper insulation, which allows beverages to stay cold for 24 hours or hot for at least 6 hours. The construction also prevents condensation on the outside of the mug. Press-on spill-proof lid. On-trend, durable powder coating. Volume capacity is 420ml. Presented in an Avenue gift box. Stainless steel.