Ruffwear Knot-a-Collar, 7 mm Rope, Low Profile, Obsidian Black, 14"-20" | Heavy Duty Climbing Rope Dog Collar, Reflective Adjustable Design with Aluminum V-Ring & ID Tag Silencer for Everyday Use

CLIMBING-GRADE CONSTRUCTION. Professional 7mm Polypropylene rope with repurposed core eliminates buckle failure points, so you get reliable dog collar performance that won't leave you stranded on remote trails when your trail buddy needs gear that performs.