An insulated bottle is a container designed to keep liquids at a stable temperature for extended periods. It typically features a double-walled construction, often made from materials like stainless steel or plastic, which helps to minimize heat transfer. This design allows hot beverages to stay warm and cold drinks to remain chilled, making it ideal for outdoor activities, travel, or daily use. Many insulated bottles come with a secure lid and a wide mouth for easy filling and cleaning. They are often reusable, promoting sustainability by reducing the need for single-use plastic bottles. Popular brands include Hydro Flask and ThermoFlask, which offer various sizes and colors to suit individual preferences.