1L Capacity Perfect size for staying hydrated throughout the day whether youre at work the gym or on the go DoubleWall Insulation Advanced vacuum technology maintains your drinks temperature keeping liquids hot or cold all day long HighQuality Materials Made from premium stainless steel the Twiisk flask is built to withstand daily wear and tear while remaining lightweight and portable Ergonomic Design Its slim modern design fits comfortably in your hand and most cup holders making it perfect for travel or outdoor activities EcoFriendly BPAFree Designed with your health and the environment in mind this flask is free from harmful chemicals like BPA and is 100 recyclable