Part of the Paris series, the 0017.579704 is an "On The Rocks" Glass from Schott Zwiesel. This glass is constructed of Tritan Crystal. A formula is added to the item which replaces lead with zirconium, for improved appearance, and adds titanium for improved strength.
The rims are laser polished for added balance. The crystal is resistant to scratches and fractures, and is therefore dishwasher safe.