Cup consistent and good qualities. I doubt whether glass, otherwise alloy. it's pretty good to avoid burns. I put 3 stars for these negative points: - The finission: the cups are nice, but the finish is not excellent. There a rim of 1 to 2 mm who come away too (joint edge of the two parts of the glasses). - No packaging dedicate to offer these cups. I find it highly damage .. - Price: I think it's been expensive glass with 2 if the foregoing is included.
These cups are worth it though, and I do not regret my purchase.
