Outdoor Connection Sling (Padded Super Sling?)

I think it came with one of the used guns I purchased.

Overview from outdoorconnection.com 2008

The Padded Super-Sling is a member of the Rapid, One-Hand Adjustment Family and was developed specifically to provide shooters with added comfort and utility when carrying a firearm.

The handcrafted, silicon-treated pad is designed as an integral part of The Padded Super-Sling", and is constructed with the same quality craftsmanship as all Outdoor Connection slings. The exterior of the sling is made with 1000 denier, weatherproof nylon and is backed with suede leather that comfortably molds to the shape of your shoulder. The interior of the shoulder pad is created by bonding premium leather, two-ply closed neoprene rubber and nylon material with a moisture proof adhesive. The pad is then sewn-locked-stitched with nylon thread.

The thumb-loop allows for added comfort by providing a means to hold the sling, while allowing the hand to remain relaxed. This eliminates strain caused by tight gripping.

In addition to being a carrying strap, The Padded Super-Sling can be adjusted in the same way as The Super-Sling, to become a shooting aid.

The Padded Super-Sling is designed for rifles or shotguns and requires only one-hand to rapidly extend, shorten or set into place. There are no cumbersome buckles, hooks or fasteners to scratch your firearm. The Padded Super-Sling comes fully assembled with detachable swivels.