I am in currently in the market for a sheepskin girth for my boy due to he has a sarcoid in the girth area. He is responding to treatment well but it is was an entrenched sarcoid that he had when I purchased him from his old owner. He is a great boy with a new saddle made for him but I am having trouble finding a sheepskin girth that I like in the color brown. His saddle is brown and I have used a black girth with the saddle and it looks hideous. I would like to make an investment in a good sheepskin girth and really in need of recommendations.
You may want to cross post in other branches of these forums as H/J or event riders might be more likely to know of brown tack.
Worldequestrianbrands.com has E. A Mattes girths with almost any color sheepskin imaginable.
Edited to add: if you want a 50" girth they have one on sale:
https://worldequestrianbrands.com/product-category/like-new/e-a-mattes-like-new/
Do you need straight or anatomic? Mattes has both and they are lovely, but pricey. https://worldequestrianbrands.com/product-category/ea-mattes/girths-with-cover-e-a-mattes/
Alternatively, you could get a sheepskin cover for your current girth. Mattes has them in brown in both straight and anatomical shapes. LeMeiux has brown for straight girths and natural for anatomical. Shear Comfort makes a straight one in brown.
Mattes - https://worldequestrianbrands.com/product-category/ea-mattes/girth-covers/dressage-girth-covers/
LeMeiux - https://www.horsehealth.co.uk/horse-wear/accessories/girth-covers
Shear Comfort - https://www.thedistancedepot.com/Shear_Comfort_Sheepskin_Girth_Cover_p/sc-gc.htm
Mattes has a variety of colors and styles. You can buy off the shelf or customize.
I have a black asymmetric girth and both my horse and I are quite satisfied with it (going on 2 years now).