This simple yet practical collar is easy to adjust and the button release clasp is strong and secure. There is also an extra loop for the essential name and microchip tags. Bringing together style and functionality, with a smart two-tone webbing with additional 3M reflective weave and soft neoprene padding for combined visibility and comfort. Xsmall 20-30cm, small 25-35cm, medium 35-50cm and large 45-66cm.