This stainless steel vacuum flask is a must - have for your daily life. With its double - walled design, it provides excellent insulation, keeping your drinks hot or cold for hours. The built - in temperature display allows you to easily know the liquid temperature. It's leak - proof, ensuring no spills in your bag. The wide mouth makes it convenient to fill and clean. Lightweight and durable, it's perfect for travel, work, or outdoor activities. Plus, it's BPA - free, guaranteeing your health.