Set of 9 grey whiskey stones， these come in a smart box with a black velvet storage pouch. Use for your Cocktail Parties - MAKES A PERFECT GIFT!Perfect for chilling your beverages without watering it downExtremely easy to use， just put in freezer for a few hours and add it to your glassAll natural ice stones cool your favorite drink without diluting the flavorsWell-rounded ice stones in order to prevent scratching your glassHandcrafted in 3/4 (2vm) cubes， & prefect size for many standard glassHow do they work?These Whiskey Stones are made of natural soapstone which has the ability to retain its cold temperature longer than ice， it is non-porous， non-absorbent， tasteless and odourless and will not react with alcohol or other household detergents.Are They Safe?Soft stone is safe to use in drinks 1000s of times. Being softer than granite， and having slight rounded edges， used carefully， chilling stones will not scratch your glasses.Recommended UsagePlace in freezer 4 hours before use， then rinse， dry and put back in the freezer after use. Not designed for large volume of liquid. Place 3 whiskey stones gently into a glassful of drink.Package Included9 x Whiskey Cooling Cold Stones1 x Premium Black Velvet BagNEW SEALED IN SMART BOX，GREAT GIFT.