For the english rigging use a dressage girth. These are readily available in most equine tack stores. For the western rigging use your own latigo straps on each side and a western cinch. I recommend a more narrow short synthetic latigo strap as it will be more flat under your leg than a heavy leather latigo strap. 
 
The red white and blue Soft Saddle has a high/extra high wither relief and western rigging. The fringe on the tail is not outdoor material and will require you to be more careful with it. 
 
The sand super slim has a high/extra high wither relief and western rigging. (the liner shown with it is NOT included)
 
We also have a grippy super slim with high/extra high wither and english rigging that is not shown here yet. Contact me if you are interested in that one. I'll try to get a pic up Monday.