They loved it!
I ordered this cup for my child's teachers as end of the year gifts and they both loved it. Since I have not personally used the item, I can't tell whether it is a solid product or not. My only thought was that for a stainless steel cup, it was very light, which could be good or bad depending on the cup's construction. Erring on the side of caution, I'll give this a 3 star instead of a 4 star rating.