Action Flex innersoles are specially developed by Trumar.The action Flex innersoles which were designed to provide perfect comfort, thanks to their open-cell structure, are antiperspirant and porous.By keeping the foot cool, it guarantees perfect ventilation and damp absorbition thanks to it’s eyeholes in front.Foot supporting structure prevents the foot and joints to overextend and with it’s efficient impact absorbition, it provides energy recovery.