This is a lightly used pack only used on a few short hunts, like new. It has a bat-wing design with two cross straps. Tons of storage pockets, a zipper pocket for your spotting scope, zippered back panel access into main storage compartment, and aluminum frame. $215 shipped
They have a sheet of material rolled up in a bottom pouch. To haul meat you place the meat on the back of the pack and pull the flap over it. There are d loops that the straps go through to snug the shelf and meat to the back of the pack.
I poorly described how it works but it works well.