Twist'n Sparkle Virtuoso – Sparkle It Your Way! Whether it's water, cocktails, or juices: With the Twist'n Sparkle Virtuoso, you can fizz everything you love, right in the bottle. Simply fill the bottle with your favorite ingredients, insert the iSi soda cartridge, and twist shut – and in seconds, your favorite drink will be sparkling. The patented "iSi CO2 Infusion Technology" ensures perfect fizz – right in the bottle. Pro tip: The colder the drink, the fizzyer it becomes. The optimal fizz is achieved at around 6 degrees Celsius. An additional bottle is ideal for pre-chilling drinks. As flexible as your life – and as compact as you need it. Thanks to its slim design, the Twist'n Sparkle Virtuoso fits in any kitchen or backpack. Ideal for everyday use, on the go, or special moments with friends. Instead of disposable bottles and ready-to-drink beverages, you decide what goes into your glass – fresh, sparkling, and with maximum freedom.