At a glance, this mug might look like your everyday drinking vessel, but look again. It's loaded with top-to-bottom insulation to keep your coffee hot from the first pour to the last sip. And it's a space saver. The built-in grooves on the bottom help it stack perfectly on top of another one just like it. So whether you're storing it in the cabinets or packing it up for an adventure - it one-ups the average mug.

The mug's wide opening means contents are easily accessible, but will cool quicker. That's why the mug comes with the standard Rambler 20oz lid. The Standard Lid and the MagSlider Lid are not leakproof and will not prevent spills.