Footprint Kingfoam Elite Mid Insoles Classic 3-6.5uk

7mm heel to 5mm toe Fits in most shoes Embossed skeleton logo bottom with tough skin TPU layer under fabric for extreme durability Absorbs 91% of impact energy in lab testing compared to 53% in other ‘performance’ insoles (ASTM F 1614 -1999) Footprint’s proprietary material in the exact same formulation is used by NASA on the ISS for sensitive electronics protection