Otherwise known as the Australian simplex irons, these safety stirrup irons have been designed to prevent the foot becoming caught in the stirrup in the event of a fall.
Bent Leg (safety) Stirrup Irons
NB: The size of the irons should be chosen according to foot size…Choose the size that gives you approximately ¼" (6 mm) of space either side of your normal riding footwear. Please note that riding footwear should always have a small heel and have only a shallow tread for safety.
These Irons come complete with black stirrup treads, as shown, to increase comfort and security.