This Nachtmann Whisky Tumbler SPHERE SET'6 is an excellent choice for luxury whiskies and other exquisite beverages. Each glass is crafted with superior-quality crystal for utmost durability and a stylish finish. Created in 2014 from the Nachtmann NextGen Project by Roman Kvita of the Academy of Arts, Architecture & Design in Prague, these tumblers experiment with the refractive properties of convex spherical shapes. These tumblers provide superior performance and are safe for dishwashing. This set comes with 6 pieces.