Rating: - Very disappointing
I love most Zojirushi products. This, however, is disappointing.
It looks fine and probably has good thermal properties. As a travel mug, though, it's useless. Unless I'm denser than I think, I can find no way to sip from it while it's covered. You have to take the entire lid off to expose the contents, thereby increasing the probability of spilling hot liquids all over yourself while commuting.
This one is going back to Amazon.
Rating: - Zojirushi coffee mug
This is a fun coffee mug. The leading chain of coffee houses has "make it yourself" mugs, but they are cheaply made out of plastic and offer hardly any insulation to keep your coffee hot or your cold drink cold. The Zojiurushi D-mug is a very upscale version of those mugs. Incredibly well made with a complete stainless steel wall both inside and out, offering superb insulation. Over that is the plastic sleeve, which never comes into contact with your drink, behind which you can put graphics of your choice, pictures, or funny drawings. It is compact, well insulated, and leakproof. It's perfect!