A hiking backpack is a specialized bag designed to carry essential gear for outdoor activities like hiking and camping. These backpacks come in various sizes and styles, often featuring adjustable straps, padded backs, and multiple compartments to organize items such as water, food, clothing, and first aid supplies. Many hiking backpacks are made from durable, weather-resistant materials to withstand the elements. Some models include hydration reservoirs or pockets for water bottles, while others may have attachment points for trekking poles or sleeping bags. Popular brands include Osprey, Deuter, and Gregory.