Insulation adds a little bit of weight. But more heavily insulated mugs like the YETI Rambler 20 Oz Travel Mug tend to weigh more but keep your drink warmer longer, whereas mugs like the GSI ...

Insulated coffee mugs enhance every sip by maintaining the perfect temperature and preventing spills. From the SR Coffee ...

There's nothing more invigorating than a hot cuppa in the morning – and nothing more disappointing than when your drink has gone cold. So which types of insulated cups are most likely to keep ...