The Anti-Spill Technology : Integrated Magnet keeps the glass on the Magnetic Stainless Steel Board. The magnet is soft enough to easily raise the glass but also at the same time strong enough to keep the glass on the Magnetic Board.  Each wine glass is perfectly calibrated. Son.hyx Technology: High Resistance to breakage, ultra clear crystal, titanium reinforced. Resistance of the rim, resistance to impact test, resistance to twisting of stems