S: width 1cm, neck 23cm-28cm, for mini dogs and cats;

M width 1.5cm, neck 29-35cm, for small and medium size dogs;

L: width 2cm, neck 30-40cm, for medium size dogs;

XL: width 2.5cm, neck 35-45cm, for medium and large size dogs.

Great for walking, hunting, camping, dog parks, or anytime you want your dog to be seen.