Nordic Rock - Brings the literal meaning of "on the rocks" back by using ancient Swedish pollution-free base rock. The fact that it doesn't melt means no unclean water in your liquid. Reusable which make them extremely eco-friendly. Comes with real leather storage in a set of 10 rocks. Really cool product and definitely a conversation starter but for those who loves chewing their ice cubes time to stop that habit haha. For more info and to get one set, click here.