dog collar size: 3.25mm,10 links,23 inch ( 58 cm ) additional link 1 2/5 inch ( 3.5 cm )

dog collar size: 3.99mm,10 links,26 inch ( 65 cm ) additional link 1 4/5 inch ( 4.5 cm )

You can also order nylon removable protector for this pinch collar
1.Reduces contact with water
2.Protects against excessive light reflection
3.Collar makes less noise
4.Does not look like pinch collar - looks like regular collar