Glass Water Bottle w/ Changeable Crystal CenterCrystal glass water bottle comes with a changeable crystal center to promote healing and wellness. Made with stainless steel and high quality borosilicate glass. Suitable for hot or cold drinks and easy to clean. The natural crystal center is rich in minerals. After running, exercise, yoga, dancing, and meditation, it can provide trace minerals for the human body. In addition, this unique crystal bottle is an excellent choice as a collector's item.