Drink set, 2 persons, 6 items. Package contents and volume: 260 ml glass - 2 pcs, cooling cubes-4 pcs, storage bag-1 pc. Material: glasses-glass; cubes-marble, storage bag-velvet (100% polyester). Before use, wash the cubes in clean water and place them in the freezer. Add 1-2 cubes to the drink. It is recommended to wash by hand using mild detergents. Do not use abrasive cleaning agents or hard sponges for maintenance. The glasses can be washed in the dishwasher on a gentle mode for glass.