If you shoe is pinching you should use this shoe expander to relieve the problem just moisten the shoe or boot at the place where it pinches insert the shoe expander and adjust the expander to the width or length required this will extend the shoe by a few millimetres and the pressure area is relieved shoe expander can be extended from 73 105 cm material plastic parts abs metal parts zinc alloy size 73 105 x 54 x 25 cm