Description Size Guide Health & Safety Care Review Warranty and Guarantee Help The Julius K9 Color & Gray Collar is made from durable nylon with a polyester thread. These collars are available in a range of colours to match the Julius K9 Super-Grip Leash range. The collar features a steel ring that the collar is clipped through to prevent wear and tear after multiple uses - this feature puts pressure on the ring rather than the buckle when controlling your dog. The Comfort Walking Collar is a high-quality, durable collar suitable for everyday use. Refer to the sizing guide below to determine the best collar size for your dog.