Best Overall Insulated Coffee Mug: YETI Rambler 20 Ounce Travel Mug ... stay hot for 12 hours or cold for 24, and the interior glass finish ensures your beverage doesn’t take on a metallic ...

but even the best steel travel mugs aren't perfect at minimizing their metallic aromas. The Vinglacé, on the other hand, is an insulated glass coffee mug, making it non-reactive and allowing you ...