When it comes to canine style, the Ezy-Dog Double Up Collar is very much in Dogue. Comfy, durable and super-secure, it's designed with two D rings to remove pressure from the buckle and ensure a strong fastening to the lead. The two stainless steel D Rings remove pressure from the easy access buckle Comfortable and easy to clean Reflective webbing for nighttime safety Accessory D Ring for attaching ID tags, lights etc. Size: XL Colour: Blue Size Guide Size Neck Size Collar Width S 22 - 29cm (8.5 - 11.5") 12mm (.47") M 29 - 40cm (11.5 - 16") 19mm (.75") L 39 - 59cm (15.5 - 23") 25mm (.98") XL 47 - 71cm (18.5 - 28") 38mm (1.5")