A self-cleaning water bottle uses ultraviolet (UV) light technology to eliminate bacteria and viruses from the water and the bottle's interior. With just the press of a button, the UV-C light activates, ensuring that the water remains clean and safe to drink. This feature is especially useful for outdoor enthusiasts and travelers who may not have access to clean water sources. These bottles are typically made from durable materials like stainless steel or BPA-free plastic, making them both reusable and environmentally friendly. Many self-cleaning water bottles also come with insulation to keep beverages hot or cold for extended periods, enhancing their functionality for everyday use.