Graced with the work of Pauline Napangardi Gallagher, this martingale collar will make a colourful statement on your sighthound's next walk. Our collars are made from cotton canvas that has been wrapped around nylon webbing. Please measure up your dogs neck to ensure you choose the right size for your dog. Medium - 14.2" to 16.5" (1.5" wide) - Large - 15" to 18" (1.5" wide) - Watch our demo video here to fit your dog: