Balls of Steel® - chill without dilution. You know our flagship product, now get to know Balls of Steel® XL: the evolution of chill. Our evolution has taken us from chilling a couple of ounces of whiskey to chilling a larger drink, such as an old fashioned or manhattan. Just like how you don't want your whiskey diluted, you don't want your cocktail diluted either. These chillers shift your drink down to a more desirable temperature and maintain the delicate flavor of your cocktail. Using balls of steel® xl coolers provides boosted flavors, and creates a truly unique experience. The enjoyable experience is made possible by the perfect drop in temperature and preservation of subtle flavors and aromas which ice destroys.