The Outfitters Supply Classic Decker pack saddle half-breed is the best available. Constructed of 24-oz canvas and bound and reinforced with leather, this half breed is built to last. It is stuffed with a full inch of Duratex breathable synthetic padding to help absorb the pressure of the load. A 1" x 4" pine bar on each side is included to spread the weight of the load across the animal's ribs. This is the same half breed used on our Classic Decker pack saddles, and is intended to be a replacement for worn out or damaged half breeds. While it does fit many other pack saddle trees out there, please measure carefully to ensure that it will work for your saddle. 8½" opening for arches. Overall size: 26"L x 44½"W.