Portable water bottles are convenient containers designed for carrying liquids, primarily water. They come in various materials, such as plastic, stainless steel, and glass, and are often equipped with features like insulation to keep drinks cold or hot. Many portable water bottles are also designed to be lightweight and durable, making them ideal for outdoor activities like hiking, camping, or daily commutes. These bottles often include a secure lid to prevent spills and may have additional features like built-in straws or filters. Some models are collapsible, allowing for easy storage when not in use. Overall, portable water bottles promote hydration and reduce the need for single-use plastic bottles.