Reflective Dog Collars Reflective dog collars make your dog visible at night, which increasing your dog's safety. Dog collar reflective lines make it easier to find your dog. Replacement Collar This replacement dog collar for shock collar is made of durable nylon material. Its a perfect universal replacement dog collar strap for training & bark collar devices. Adjustable Collar The replacement collar is adjustable in length from 7 to 26 inches. Suitable for small, medium and large dogs. Easy to Wear This dog collar strap is a convenient 2-piece set. Adjust the length and wear the collar according to the steps. The collar can be put on or taken off at any time. Universal Collar Size Adjustable dog collar strap is 0.7" wide and 27" long. Fits 7 - 26" dog necks. Universal collars fit on most receivers and training equipment.