Small size: mouth circumference 4.5, neck circumference 4.7-10.0, mouth height 1.8. Medium size: mouth circumference 6.1, neck circumference 5.5 - 13.4, mouth height 2.4. Large size: mouth circumference 6.5, neck circumference 6.7-15.7, mouth height 3.
Quantity
Goes well with this item. Each is the same price as on its own page.