As people who like to scramble up and down vertical things - be it rock or sailboat mast - rope has long been one of our best friends. Add some knot know-how and its usefulness increases exponentially. So it was just a matter of time before we put this invaluable tool to use on our canine compadres.

Elegantly simple, our Knot-a-Collar combines 7mm climbing rope with the rugged beauty of climbing-inspired, aluminum hardware. Reflective strands woven into the rope aid visibility in low light. Two fisherman knots slide along the rope to adjust the fit (they're welded so they can't come undone).

• Low-profile 7mm rope settles comfortably into fur
• Sliding fisherman knots are adjustable for a customized fit
• Non-slip sizing and ID attachment with single-piece anodized aluminum belay plate
• Single-piece, anodized aluminum V-ring provides a secure leash attachment point
• Easily add or remove dog tags with Quick Ringâ„¢
• Silicone tag silencer keeps dog tags quiet
• Low-light visibility with reflective trim
• Made in Vietnam