With its generous capacity, this tumbler has plenty of space for both liquid and ice.Definition is an evolution of two previous SPIEGELAU collections: Willsberger (1982) and Hybrid (2011). With the help of proprietary new technology, SPIEGELAU introduces a modern collection of thin machine-made glasses. These stunningly elegant glasses are light as a feather, feel perfectly balanced in hand, and showcase wine's aromas and flavors at their very best.This product is machine-made. Due to the manufacturing process small tolerances in the measurements are possible.