Primus vacuum commuter mug 300ml description the vacuum commuter mug is a vacuum insulated mug made of durable stainless steel the mug secures the temperature of both cold and hot beverages the tight fitting silicon sealed lid simple locking switch and double walled insulation keep your drink cold or hot on your way to work or by the campfire the compact design takes up minimal space and accommodates a variety of vehicle cup holders details height mm 160 diameter mm 79