Check the listing for details. MDC S Classic Non-Flex Stirrup Iron. Condition: New. Listed at 199.95 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 Classic Stirrups deliver improved stirrup and leg position, provide a greater base of support, relieve pressure on ankles, knees, hips, and back. They are easily retrievable and safer in the event of a fall. The MDC S Classic Stirrups are the perfect stirrup iron for the English rider who wants a distinct riding advantage but prefers the look of standard fillis irons. On the S Classic 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 hangs in the traditional plane. The base of the S Classic Stirrup is also ultra low profile, with a high traction wide aluminum tread and a 45 degree trailing edge that allows you to pick up a lost iron quickly. MDC S Classic Stirrup Irons are ideal for jumping, dressage, eventing, polo, endurance, and trail riding. Available in sizes: 4.5, 4.75, 5