Material: Leather Size XS: 1.5cm × 30cm Adjustable Length: 20cm-26cm S: 1.5cm × 37cm Adjustable Length: 26cm-32cm M: 2.0cm × 42cm Adjustable Length: 32cm-38cm L: 2.5cm × 51cm Adjustable Length: 36cm-46cm . Packing: opp bag How to measure: To find your dog's size, simply measure around its neck with a flexible tape measure or rope, leaving it comfortably loose. Dog collars should be comfortable with enough space to fit two fingers under the collar, nor should the collars be so tight that they restrict breathing or cough. We recommend adding 1 inch to your measurement. Grades: Due to the difference between different monitors, the picture may not reflect the actual color of the product. - Allow 1-2cm error due to manual measurement.