Kingfoam orthotics support your arch from over pronation which can drastically reduce soreness and prevent injury. Impact is a thing of the past. The Kingfoam dual density arch will custom shape to your foot and the foam compression resistance will provide excellent support. Your shoe will fit like a glove. Plus the insoles are newly updated with fabric protection for the forefoot pad and new fabric glue for maximum durability. It can take up to 5 days to break in the arch if you have flat feet. Although it may feel awkward or uncomfortable at first if you have never had orthotics, one they fully break in, it will be heaven. This type of insoles is used by so many professional skaters and even by doctors and military. They absorb so much impact you can drop raw brown eggs won’t break on them. Try it. Wear your sole for about 15 minutes until it warms to your body temperature, remove your sole and drop a raw brown egg from waist high. It will bounce off. Then try the same act on other insoles.