Perfect for yoga, the gym, or the beach, these dome-shaped water bottles, with crystals, keeps your beverage of choice cold. Our premium crystals act like 'cold rocks'helping to keep your smoothie or water cool. Available in your crystal of choice, rose quartz is a 'heart or love' crystal, amethyst is a 'calming' crystal, clear quartz is the 'clarity' gem, and 'citrine' is the prosperity crystal.