Review on ☕ Double Wall Glass Large Coffee by David Sanchez

I was generally skeptical about vacuum mugs because I thought they were made of plastic and not glass. Thanks to the information in the ad, I decided to give it a try. Everything about this mug is as described. I've tested it in every way I can think of. I am shocked how perfectly it fits. No hot microwave handles, coffee stayed hot for a long time, rang, yes, glass. I like it. Okay, it's been a little over a month and I have to reevaluate my excitement to disappointment. The sealant cannot withstand microwave heating. I don't have a dishwasher so I always wash by hand but after a month of use condensation started to form in the glass. I don't know how this is possible as I've never done anything to overheat it other than heating the coffee in the microwave. I'm not sure if it did, but it's best to guess. Back to finding my perfect coffee mug.