Schutz Doubled and Stitched Single Ear Headstall 5131 Over & Under these shims are designed to

these shims are designed to sit between the saddle and saddle pad to fill void spaces behind the withers or along the back to improve saddle fit

For reference here's our Horse & Pony sizing:

Western Edge Black Bangle Bracelet TBBC1001

Contoured fit and reinforced double hook and loop closures keep boots in place

Schutz Doubled and Stitched Single Ear Headstall 5131 Over & Under these shims are designed toSchutz Doubled and Stitched Single Ear Headstall 5131 5 8 inch double ply harness leather with stainless hardware, double adjustment buckles which are removable. Chicago screw bit ends. Made in the USA. Hand finished and dyed edges. Average horse size. 5 pre punched holes on each side of the poll makes this headstall adjustable from 34 inches to 42 inches measured bit end to bit end around the poll.