Insoles with arch support helps your foot correct and handle pressure when walking och standing. Even if you do not suffer from foot pain insoles with arch support can prevent foot pain and related problems with back and knees. problems down the road by offering support and stability through the arch.
There are variants for both normal and high arch, some models also supports other part of the foot like the heel or forefoot. There are also soft models that are prefect if you spend long hours standing or walking while at work.