There is nothing wrong with the product however what would have helped is if one could see an image of scale. i.e. the bigger glass next to the smaller glass next to say a matchbox. So you can determine the size. There is nothing wrong with the amount of ml the glass holds - more than a can of coke but it is short and squat. I do love them may be just a tad taller.
I would recommend this product to a friend.