Review on Stay Warm And Enjoy Your Brew: Set Of 4 Insulated Double Walled Glass Coffee Mugs With Handle And Borosilicate Glass Tea Cups by Daniel Greene

I've been using these for about 2 months now. Both hand cleaned and dishwasher cleaned and they have held up well. The double wall design holds heat in and makes it comfortable to hold very hot drinks.When I got them I was a bit disappointed at the smaller than expected size. I should have looked at a 10 or 12 oz size. also the glass is thin. These are very very light and delicate. However I haven't really treated them with any extra care and they seem pretty durable and tough. Haven't dropped one yet. Still don't think it would survive even a minimal drop on a hard surface.The only negative that would make me unlikely to purchase these again is that the shape on the inside bowl is very rounded on the bottom and it makes the contents very easy to slop over the upper lip with minimal movement of the cup if you fill it up. Even if I leave an inch of space from liquid to lip I can still spill it just picking it up from the counter due to how the rounded bottom and sloped side allow the liquid to move.This cup has a nice handle that even someone with decent sized hands could use, but the overall size of the cup even with the double wall design would still be comfortable with someone with smaller hands to hold.Oh and we stack these one in the other two high or even in a regular cylindrical mug and then two of these on top in our kitchen cabinet and it has worked well with no damage to any of them.My wife loves them and would disagree with my comments on the capacity and and how easy it is to spill.