The Henri de Rivel Dressuer Dressage Saddle with the Interchangeable Gullet System is great for horses and riders at any level! The IGP (Interchangeable Gullet System) is convenient for riders that need to fit multiple horses or for horses that have changing muscle tone throughout the year. This HDR Dressuer saddle is comfortable and durable; the grippy-covered leather breaks in quickly while keeping you secure. The medium-deep seat allows for a close feel of your horse's back. Lifetime warrantied injection molded polymer tree with flocked panels. Gullet plates are sold separately in sizes Narrow, Regular, Medium, Medium Wide, and Extra Wide. All Henri de Rivel IGP saddles come equipped with a regular width gullet.