Review on Farielyn Insulated Cappuccino Coffee Glasses by Christian Poojary

I've had these mugs for a few days now. The weight of the box was light when I received it. That surprised me. I have read the instructions carefully. Hand wash only, not in the dishwasher. Don't rub. They keep my coffee and tea warm for several minutes. They're not exactly 12 ounces, but that doesn't bother me. The instructions do not mention a microwave oven. However, Revain's description states that it is safe to use in the microwave. Sometimes Revain's descriptions are wrong, so I read a few reviews. One reviewer said it was used in the microwave. I dared and successfully warmed up tea in the microwave. In general I am satisfied. I give it 4 stars instead of 5 because the mugs are expensive, delicate and only hand washed.