The Tepist TwentyO is a double wall, vacuum sealed stainless steel bottle holding 20 ounces of fluid. It utilizes thick gauge stainless steel to ensure that your beverage stays ICE cold up to 24 hours. It will even hold ICE up to 72 hours! If you are tired of warm drinks and soda, the Tepist is designed to keep your beverages cold. If you prefer a hot drink, it will also keep your hot beverage like coffee hot ALL day. Tepist TwentyO works with many of the Sodastream models both twist and clamp styles. A few are Power, Spirit, Genesis, Source, Fizzy, Cool, Play, Jet, Fountain, Dynamo [Vacuum Sealed] Keeps drink cold for 72hrs and hot for 6hrs [Sodastream? Compatible] works with Power?, Spirit?, Source?, Fizzi?, Cool?, Play?, Jet?, Fountain? Dynamo? || NOT COMPATIBLE WITH THE Genesis? [Easy Hold] Travel easy with Tepist, two fingers, that's all! [Tough] Scratch and Chip Resistant Powder coated Finish [Large] 18/8 Premium THICK Walled Stainless Steel, Large 20 Ounce Capacity