Thick collar leather, tapers from 7" wide at each end to 3 3/4" wide in the center. Has a block of wood with three machine-drilled slots attached to each end by brass screws. The slots are for receiving the projectile end of the shell. Has a single piece of leather gathered to form three loops situated 7" from each end for holding the top of shells in place. In the top center is a narrow leather strap with metal buckle for attaching to the pack.