GABE HUTCHINS REINER. This Bobs Custom Saddle is built on a AF Tree with a 16.5 inch California Seat. Bob’s Custom Saddles are built with the finest trees available; from hand-picked, top-grain Hermann oak leather, real sheepskin, and hand-engraved sterling silver or silver overlay. Bob’s hand-tool every saddle, hand-lay every ground seat, hand-stitch every seat, and hand-craft each cantle. Their superior quality, craftsmanship, and performance are a prime choice for premier horsemen around the world.