I used to use leather girths no problem, and trainers have used leather on my horses, but I have gotten small rub in past using my leather girths. So have been using cheap synthetic fleece girths or girth covers and they seem to work ok.
However, one mare has gotten fluffy (thus trying to ride every day, increasing work slowly, and work some wt off her) and fleece girths too short. Bought fleece cover for leather girth and still got small rub behind elbow.
I can get a longer synthetic fleece girth but looking at other options. I feel like the synthetic fleece needs regular washing or can rub, that is why I went to fleece cover, easier to wash.
Did a search and read about mohair girths but can’t find in regular size I need. Most l can find are western cinch or for dressage/monoflap type saddles – I may need a 52 inch regular english girth – 50 inch synthetic fleece is too short but without fleece 50 inch might work.