If you are going to be on a treadmill while wearing heavy leg irons, it is important to make sure that your ankles are properly protected with a nice pair of army boots. Like these Corcoran Boots available from Mr S — helpfully modeled by one of Richard Hunter’s prisoners:
To learn more about these boots, visit Mr S.
Iron restraints from Mr S here
More Bondage / BDSM gear from Mr S here