This 2-piece set of vacuum flask bottles is perfect for keeping your hot or cold beverages at the ideal temperature for hours. The bottles are made of durable stainless steel and have a capacity of 17 ounces. They come in a sleek silver color and are ideal for storing and serving cold drinks, tea, or coffee. The bottles feature an unbreakable stainless steel construction and are perfect for outdoor activities or daily use at home. The vacuum insulation technology ensures that your drinks stay hot or cold for as long as you need them to.