ISO 24266:2020

This document specifies two test methods for the determination of the flexing durability of whole shoes. The two methods might not give comparable results.
NOTE     The selected test method depends on agreement between relative parties who use this test method or product standards which reference this test method.
These methods are not applicable to the whole shoes with heel height more than 50 mm, or the thickness of flexing area of the soles more than 25 mm, or flexing angle less than 45° according to ISO 17707:2005, Clause 6.