This machine is used to test the bending resistance of the sole material under continuous bending. Before testing, some holes are produced in the place where the soles are maximum bending. The ends of the shoe soles are fixed between the clamps. During the test, one end of the fixture is fixed, one end is active, and the specimen is flexed by the convex motion of the machines circular shaft. After a certain number of tests, the bending changes of the test parts of the sole are removed.