Tiffany & Co. PR55ZS Gunmetal Black Flute Glasses have received a number of positive reviews from customers. Many customers have praised the glasses for their stylish look, as well as the excellent quality of the lenses and frames. Customers have also noted that the glasses are extremely comfortable to wear, and that they provide excellent clarity and vision. Overall, customers have been very satisfied with their purchase of these flute glasses from Tiffany & Co.