Double-wall vacuum-insulated 14 oz mug.
If keeping your coffee warm without burning your hands is the problem, then Yeti is the solution. Northwoods Green to inspire mountain vibes, this keep things at the temp they should be (hot or cold) while offering a standard Rambler 30oz lid for easy sipping without cooling.
Founded in Austin, TX in 2006, there was a market needing fulfillment for long term cold storage - enter the YETI we know and love today, geared to outdoorsman and casual poolsides alike. In their words: "[the cooler] that simply won't break."