This is a well used but in great condition Prestige Trekker Land saddle. Designed for many hours riding it is super comfortable for horse and rider. This saddle has fit every horse I have put it on. The design is different from other saddles, so it is hard to provide measurements, but I did provide photos with measurements to give an idea. I was told it's measurements are equivalent to 16 seat western/18 English and the gullet is 7 1/2. The panels are 21inches. This is a used saddle. There is some wear, but nothing to affect functuality.
From the manufacturer: The best thing in trekking saddles. The seat is suspended and floating thanks to an intertwining webbing . On longdistance rides this assures comfortable seating that is cushioned against movement. The size of the withers bar and seat is standard. The saddle can be entirely taken apart to facilitate cleaning and maintenance. A single flap saddle with mid-size blocks that are anatomically shaped (banana blocks). The panels are in felt covered with synthetic fleece. The billets are long.