ISO/TR 20881:2007 establishes the performance requirements for insoles components for footwear (not for the finished footwear), irrespective of the material, in order to assess the suitability for the end use and/or fitness for purpose. It also establishes the test methods to be used to evaluate the compliance with the requirements. This Technical Report applies to insoles for various kinds of footwear. ISO/TR 20881:2007 is intended to be used as a reference between the manufacturer and the supplier. It is not intended for third party certification.