MDC ‘S’ Flex™ The MDC ‘S’ FLex is designed for riders who appreciate the classic lines of a traditional fillis stirrup and the benefits of MDC's patented, improved design.The MDC ‘S’ Flex™ features our patented 45° ‘S’ Positioning Technology. Combined with our ultra-low profile, high traction aluminum tread, the MDC ‘S’ Flex™ delivers improved stirrup and leg position, greater base of support, relieves pressure on ankles, knees, hips and back, is easily retrievable and safer in the event of a fall. MDC Stirrups are designed by a professional horseman; from our Saddle to Yours / Horseman to Horseman. Patented MDC ‘S’ Flex Stirrups™ with 45º ‘S’ Stirrup Positioning Technology Invisible design produces performance advantages for riders of all riding disciplines Multi-Pivot Point™, shock absorbing sides Ultra-low profile, high traction wide aluminum tread with 45º easy retrieval trailing edge Optional traditional width aluminum tread available Lighter weight, 2.6 lbs/pair (1.18 kg/pair) Available in 3 wide tread sizes (4.5, 4.75 & 5 inches) Ideal for Jumping, Dressage, Eventing, Polo, Endurance and Trail Riding Sizes: 4 1/2, 4 3/4 or 5