Brand new High Quality 9 pcs Whisky Stone are a great way to cool your favorite drinks. Unlike ice cubes, it gently chills your drink without diluting them. Whiskey Stones are non-porous and thus odorless and tasteless. So, adding Whiskey Stones to your favorite bourbon will chill the spirit without affecting its taste. Made from "soft" stone, these rocks won't scratch glassware. Durable, it can be used again and again after you wash them. Freeze for 3-hour before using Color: Light Gray Size:2 x 2 x 2cm Package Size: 13 x 10 x 2.5cm Package Weight: 230g Package included : 9x whisky stones 1x pouch Note: you must put the ice stones in the refrigerator, then they will have cooling effect.