Tunnel Vision is this bizarre 5.7 down in Red Rock Canyon where you climb into one side of a cave and out the other. As uniquely fun as it is, it's really nice to have one or two of Edelrid's Tubular Sling 16mm to extend your placements and reduce rope drag in there. Otherwise you'll be too busy pulling up the rope to actually enjoy the unique position you find yourself in.
Sewn sling ideal for traditional, multi-pitch, and alpine climbs
Robust, abrasion-resistant nylon is also supple and easy to shorten