OmniPet Officially Licensed RealTree APC Camouflage Nylon Collar with Black Durable Metal Hardware 19inch - 2-Ply Nylon Collar To find correct collar length, add 4 Inch to dog's exact neck size Officially Licensed Real Tree APC Pink Camo Pattern and Black Durable Metal Hardware Made in the USA Designed for tie-out use, The "D" would need to break through two layers of the material for dog to be set free