The best analogies are those that don’t relate to horses….. have you had those annoying sox's that just won't stay up.
A saddle blanket of any type requires a good structure to sit nicely and not wrinkle under the saddle, a tired soft saddle blanket can cause rubbing and movement, this becomes even more important the longer you ride and if going up and down hills.
· Use a blanket that has shape over the wither
· Throw out or repurpose your old blanket
· Buy new not secondhand
· In the girth area there shouldn’t be any piping
· Make sure the saddle fits within the saddle blanket