Gentle Creatures Collar Companion - Adjustable Backup Clip for Dog Harness, Prong, Pinch Collars, Gentle Lead - Double Ended Backup Clasp - Harness to Collar Safety Clip

100% on this one! I also have a secondary leash-collar clip when I walk my escape artist and a leash that goes around my waist.

Link for the collar companion - https://a.co/d/0ggbNPmn