I saw Abbey Road but they’re overseas and shipping concerns me (time, money, etc). Don’t need a ton of material, just something to bump up some compressed areas along the spine as Pony learns to lift their back, and is not prone to bunching.
Are you a saddle fitter? I recommend not flocking if you haven’t been trained. It is really easy to ball up the wool and or disturbed the rest of the wool and cause issues.
It it something to stuff saddles with?
Jacob’s wool is the typical grey wool saddle fitters use in saddles. Jacob’s sheep is a rare breed of here in the US.
You can get wool roving on etsy from people who sell to hand spinners and weavers. But Abbey ships pretty fast IME if you need that specific wool.