I intended to use this mug strictly for backpacking, but find myself using it nearly every morning for coffee and becoming my favorite "mug". Double walls do exactly what they should - Maintain temps longer than wussy-single-wall-equivalents. It's a prized piece of my gear, and I care for it accordingly - I don't dare stick this into the dishwasher or microwave. You may be able to get away with
This review was written in the old system and had content requirements that are different than reviews written today.