The PackHanger 2 is the newly updated version. The original (PackHanger 1) was very similar in design, but was made of a non weight rated nylon webbing. Designed primarily as an easy way to keep your backpack off the ground by simply attaching it around a tree like a belt and using a carabiner or hook of your choosing to hang your pack on it's built in loop.The PackHanger 2 builds on that primary design by now using the same webbing our tree straps are made from and using the same box stitching as the tree straps. This gives it enough strength to also be used as an emergency tree strap for your hammock, should one break or get lost on the trail (or in my case left at home once).