Easy to use. Place stones in freezer for 2 - 4 hours. No more watered-down drinks! Add desired amount of chilling stones to beverage. The stones don't add any flavors or smells, safe to use. This item would especially make a good impression as a gift! Perfect for Whiskey, Vodka, Wine, Cocktails or any other beverage. Chill Your Drink while preserving its flavor without diluting it. Enjoy your time with an ice-cold whiskey or other beverage!(3 stones 60-90 ml wine would be better) Material: granite Category: Geometry Material type: stone Production process: grinding Pendulum form: town ice Production methods: semi-manual semi-mechanical Applicable scene: home Size: 2x2x2cm Weight: 145g Color: gray, white, striped color optional 6 x Ice Stones 1 x Bag Due to the difference between different monitors, the pictures may not reflect the actual color of the item. Compare the detail sizes with yours, please allow 1-3cm error, due to manual measurement. Please leaving a message before you give the bad feedback, if the products have some problems. Thanks for your understandings.