The Rope Logic Ultra Sling offers a new dimension in quick easy adjustability that is perfect for anchoring friction brake systems like the Port-a-Wrap. Innovative design offers a no hassle, no-slide, no knot method for anchoring your favorite lowering device. Featuring 12" pockets the Ultra Sling allows arborists to simply wrap the Ultra Sling around the tree and then simply pass the lowering device through the most convenient pocket.