The FootPrint Kingfoam Insoles are the ultimate action sport insole. It features a flat thickness of 7mm from your toes, to your heels. This will help save your feet from the inevitable high impact stress that every action sport is plagued with. The insole absorbs 91% of impact energy in lab testing compared to 53% in other "performance" insoles (ASTM F 1614 -1999). Finally, this insole is compatible with all foot types and will fit in most shoes.