Buttera

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 or white wool blend, and an amazing medicinal sheepskin. I recommend 1cm inserts with sheepskin unless rider is over 185, and for other bottom materials unless over 165 or horse's spine is well protected.
I keep mostly black with various bottom materials in stock. Other colors will have to be ordered from Italy.

Replacement pad inserts for the Ghost pad. Original, older pads had 2cm, but now the 1cm is standard and 2cm is used for heavier riders or those who's horses have more prominent spines.
Price is for a pair.

This velcro lined seat cushion (new design!) goes under the seat of the Ghost saddle to provide a little extra cushion for those with sensitive seat bones. It can also narrow the twist a little and provide extra hip support. Works great with the Flexx base to add additional support to the rider. It's also been used with other treeless saddles that are less structured.
Note - the seat cushion will reduce seat depth but does add seat bone cushioning so isn't hugely noticeable.

These are also a webber style strap as there is a nylon loop at the top that goes through the stirrup strap ring and then the adjustment is made with a Conway buckle. There is an advantage over the T-bar straps because the T-bar doesn't fit through the slot of many english irons. But these do work best for people who run their stirrup straps under the flap as the stitched overlap of the nylon loop to the granite biothane strap can rub the outside of the flap.
Also best for less strenuous riding as the nylon loop can move sideways and put torque on the front or back of the stirrup ring if the rider's legs aren't in a shoulder-hip-heel alignment.
Best configuration is to have the Conway point away from the rider's leg which points it forward, also away from the horse, but there is a snug keeper to hold everything in place. For people who regularly change stirrup length for students or Ride&Tie partners, arrange the top layer of the strap on the post side of the Conway for easiest changes.