Do all outdoor products have multiple functions?

Although many modern outdoor products are designed with multiple functions in mind to meet the needs of different activity scenarios, not all outdoor products have multifunctional features. Multifunctionality is very common in outdoor products, especially for equipment that requires long-term use or limited space. For example, some backpacks may come with features such as a water bag system, built-in rain cover, and adjustable shoulder straps in addition to storage, to enhance comfort and convenience; Some camping cookware can be used as barbecue grills, portable stoves, and even compatible with other devices; In addition, some tents may be equipped with additional shading areas, storage bags, or built-in lighting systems to increase practicality.
However, there are also some outdoor products that focus on a single function and are designed for specific needs. For example, the main function of hiking shoes is to provide comfort and support, ensuring safe walking in complex terrains; Some basic tents or sleeping bags, although they perform well in certain aspects such as waterproofing and warmth, do not have other additional functions. Products that focus on a certain function are usually simpler and more direct, suitable for outdoor activities that require high performance, such as mountain climbing, polar exploration, etc.