Best Overall Insulated Coffee Mug: YETI Rambler 20 Ounce Travel Mug Runner Up Best Insulated Coffee Mug: Klean Kanteen TKWide 20 Oz Best Budget ... 12 hours or cold for 24, and the interior ...

THERMOS Travel Coffee Mug with Snap Flip Lid ($24 at Amazon) We noted that this mug does not leak at all, even when knocked around on the countertop. Though it fits in standard car cupholders ...