Protective Collar Item no.: 19480-19486 With clip lock Cm information shows neck circumference/collar length Item no. 19480 also suitable for cats Plastic Transparent Size: Extra Small Neck circum.: 22–25 cm Measurements: 22–25 cm/7 cm Size: Extra Small/Small Neck circum.: 22–25 cm Measurements: 22–25 cm/10 cm Size: Small Neck circum.: 28–33 cm Measurements: 28–33 cm/12 cm Size: Small/Medium Neck circum.: 31–38 cm Measurements: 31–38 cm/15 cm Size: Medium Neck circum.: 38–44 cm Measurements: 38–44 cm/20 cm Size: Large Neck circum.: 44–50 cm Measurements: 44–50 cm/25 cm Size: Large/Extra Large Neck circum.: 47–57 cm Measurements: 47–57 cm/30 cm.