New Ghost Seat

These slip on over girth straps if there is a bigger gap between the bottom of your pad and the girth (short flap saddles or larger horses). They can also be ordered with the top layer to match your saddle color. Backing options are neoprene, black, brown, or white wool blend (or exclusive sheepskin, but that's really more for show than practical use and typically order along with either a zalea or Cagliari/Maremma saddle.)
Sold as a pair.

Replacement base - includes girth rigging, but not panels

Panels for Ghost saddles - and can work for other saddles with loop-side velcro underneath. Price is for a pair of panels or the complete western skirt with integrated panels.
New option - XL velcro opening panels, great for those really wide horses, but may also provide more stability for slab sided horses. (NOT available - or needed - with Thick insert option) Panels for 16" seat run just over 20", for 17" seat is about 21", for 18" is a bit over 22". Important - the XL panels are 7" wide so you need to make sure your pad structure supports that! See more details below.

Ghost makes an extremely nice pad, especially for the very reasonable price. Many people buy these for other saddles including BMSS, Freeform, and even treed saddles. Bottom material options include sympanova (a soft rubber, easy to clean, breathable), black, brown or white wool blend, and an amazing medicinal sheepskin. My favorite material is the new Vella. It is synthetic but seems to be doing well for many endurance riders. It's a short fiber, medicinal quality materia which is easy to clean and doesn't clump like most wools which helps to avoid heat retention.
I recommend 1cm inserts unless rider is over 185.
Add embroidery with your horse or barn name for extra fun!
I keep mostly black with various bottom materials in stock. Others will have to be ordered from Italy.