Runners are woven material, generally using either new zealand wool or synthetic carpet fiber.
The two fibers differ in appearance, color and texture. Either category includes products in an array of density, quality, style and price. Synthetic fiber is typically less expensive than wool.
Regardless of the fiber, woven products are constructed in similar ways on either Wilton, Axminster or Jacquard looms.
Some in the Wool category are 80% Wool/20% Nylon blend. These are known Axmintser or Jacquard Woven, among the best combination of fiber content and type of construction for stair use.