An elegant, hand -cast magnet is integrated into the base of the crystal glasses. To ensure that the glasses stay in place while you drive, they must be combined with a metal counterpole . The set includes four metal nano-gel pads for this purpose. The force ratio between the magnetic glasses and the metal nano-gel pads is perfectly balanced, so that the glasses are held in place by the pads on the one hand, but can also be easily removed from the pads for drinking on the other. Thanks to smart nano-gel technology, the pads can be removed at any time without leaving any residue , cleaned with clean water and reused as often as you like . This gives you maximum flexibility and you can always use your magnetic glasses wherever you need them or store them rattling-free and securely in the cupboard. Our aim is to provide the highest quality and be made in Germany. All crystal glass collections are made of the finest Tritan composite , tested , scratch-resistant and BPA-free .