Woven wool saddle pads with a contoured back are a traditional western style saddle pad.
Contoured (or "built-up", "wither-relief", "swayback" or "orthosport") saddle pads are raised in the front to lift the saddle off of the withers. Built-up saddle pads are designed to fit horses which have very high (shark fin) withers. Swayback saddle pads are designed for horses which have swaybacks or very prominent withers. Swayback pads have an elevated area over the withers, and also provide extra padding in the middle of the pad. Orthosport pads have a breathable core, and extra padding behind the shoulders and along the spine, to relieve pressure from the withers and kidney areas.
Woven wool is strong and can be made into any pattern or color.