TuffRider Aluminum Safety Stirrups Silver The TuffRider Safety Stirrups are safety jointed and shock absorbing. The 2-way joint provides optimum security and stability which will go along with the rider's movements. They also have integrated springs in the tread to preserve the rider's knee and ankles from shocks. These springs will also relieve the rider and horse's spine. Shock-Absorbing Stirrup 2-way joint Stainless Steel Available in 41/2", 43/4", 5" & 51/2"