Aerb Set of 4 Stainless Steel Chilling Ice Cubes Reusable for Whiskey Wine Beverage Food-grade stainless steel liquid-filled cubes are a non-diluting alternative to ice cubes; Made from stainless steel, durable, easy to wash and clean; Unique gift for spirit drinkers; best chilling ice cubes for whiskey in the market; Securing a secret non-toxic gel; extend the chilling! Great for whiskey, vodka, liqueurs, white wine and more.