Centaur Flex Side Stirrup irons are English stirrup irons made from stainless steel for a traditional look. A grippy white rubber foot pad enhances rider comfort and security. The double-jointed flex side arms are designed to absorb shock and reduce pain through the rider's foot and ankle. Jointed stirrup irons are popular in the jumper ring and with riders find the extra flex is more comfortable for their knees and ankles.