Check the listing for details. MDC S Flex Stirrup Iron. Condition: New. Listed at 209.95 USD. MDC's newest stirrup design combines the looks of a traditional iron with the advantages of a 45 degree forward-facing stirrup, along with MDC's wide aluminum tread. MDC S Flex Stirrups deliver improved stirrup and leg position, provide a greater base of support, relieve pressure on ankles, knees, hips, and back, and are easily retrievable, and safer in the event of a fall. The MDC S Flex Stirrups are the perfect flexible stirrup iron for the English rider who wants a distinct riding advantage but prefer the look of standard fillis irons. On the S Flex Stirrup, the top of the stirrup slot is turned like an S while the lower portion of the slot faces forward. When the stirrup is in the show ring, the stirrup leather covers the S portion and the rest of the iron is hangs in the traditional plane. The base of the S Flex Stirrup is also ultra low profile, with a high traction wide aluminum tread and a 45 degree easy retrieval trailing edge. MDC S Flex Stirrup Irons are ideal for jumping, dressage, eventing, polo, endurance, and trail riding. Available in sizes: 4.5, 4.75, 5