Hotportgift Whiskey Stones Rocks Ice Cubes Soapstone Wine Bev Chillers 3 6 9pcs/set (9 pcs, black) Whiskey Stones Are Perfect For Keeping Your Favorite Drink Nice And Cold Best Of All It Won't Effect The Flavor Of Your Drink And Prevents Your Drink From Getting Watered Down From Melting Ice. For Best Results Simply Wash After Use And Air Dry Before Placing In Freezer. Really Cool To Use And Make An Fantastic Gift Completely Washable And Reusable