The english saddle is the most important tool for the rider and horse, and because of the craftsmanship and careful design, usually the most expensive. Most riding saddles are built on a flexible laminated wood tree. Metal stirrup bars are riveted to the saddle tree. The shape of the tree and placement of the stirrup bars determine the size and shape of the saddle. The riding saddle must be fitted to the horse’s withers, back and barrel to ensure comfort and prevent physical damage to the horse.