Do we need a tumbler designed by computer to maximize the whiskey drinking experience.
Yes. Yes we do.
The Norlan glass is a transparent double walled vessel, formed with glass blowing technique into two separate two-part molds: one for the inner wall, and one for the outer wall. When the inner and outer glass walls are prepared, the rims are reheated and the inner glass is inserted, at which time the rims are sealed. This creates a hollow body glass with dramatically different inside shape to outside shape.
A unique effect of the double-walled construction is the intensity of color added to spirits in the bowl, which is further carried up into the rim of the glass.