Flex-On Aluminium frame Ultra-grip stirrups (inclined or flat footbed)Flex on's premium aluminium framed version of their innovative hi tech stirrups designed and scientifically proven to help with the rider's position and reduce strain on leg muscles and joints. These have to be tried to be believed (see below for info on our tester service) Flex on also offer a lower cost Composite version of these stirrups plus the "Safe on" safety model (see "You may also like" below). Read "More about Flex on Stirrups" for an