You can feel the quality right out of the box.  Though smaller than similar latte cups we bought, these are heavier.  In addition to making our morning cappuccino an experience (not just a cup of coffee), these will keep your coffee nice and hot for a long time.  I'm a coffee sipper so that's a nice feature.  Nice addition to our routine with our Philips LatteGo.  We've been putting them in the dishwasher with no issues.