OmniPet Zeta Ring in Center with Dee Dog Collar To find correct collar length, add 4 Inch to dog's exact neck size Made in the United States Water repellent, easily cleaned and soil, odor and rot resistant Made with Durable Metal Hardware Safety collar, designed for hunting dogs The center ring allows the collar to roll over if dog becomes entangled Designed for tie-out use The "D" would need to break through two layers of the material for dog to be set free