Nylon adjustable grooming loops in black Quick on/off using the buckle snap closure. Great for dogs who hate having things put over head, or when you put decoration or collar on(you don't have to feed leash through your loop) two adjustable sliders to adjust length, and adjust size of neck loop. move the second slider tight to the neck sizing one to prevent it from moving at all. length when sized as short/small loop as it can go is 18" Length when sized as long as can with small loop is 26" Neck loop can be sized down as small as a couple inches and up to 41" around Description for photos: adjust slider as long as it can go for big neck dogs or tall grooming arm. ** disclaimer** this style might move a bit if cross tied and dog strains to back out with only one slider by neck loop. with both sliders pushed together it will not move. because it is not a choker style, I do not feel they are escape proof.