Well it should fit you and the horse, a well made tree, and soft good leather. Make sure the saddle fits your horse without any pads
Good quality tree, i dont like harsh leather that can be too bulky and hard. Your fit is the most important, set it on your horse without a pad and study it. Make sure it does not affect shoulder movement, withers, or the spine. The saddle should never hinder movement. In many cases your horse will let you know if anything is uncomfortable. 😊
Hope this helps you
Leather condition, leather type and soild tree.