Portability: easy to store in the trunk, making it handy for roadside emergencies. multi-functionality: useful for a variety of inflatables, not just tires. user-friendly: many models come with digital displays and automatic shut-off features for convenience. common uses tire inflation: keep your car tires properly inflated for safety and fuel efficiency. emergency situations: quickly inflate a flat tire or other items in case of an emergency. general household use: inflate sports gear, pool toys, or air mattresses.