Reflective collars ensure the safety of your pet in the dark. Our large size reflective design collar will keep your dog safe and secure in the dark. The reflective collars reflect light falling on it, thus allowing you to keep an eye on your dog in low light. It enables you to spot your dog on roads and pavements in the dark. The collar is crafted to be simple to use and will fit your dog\'s neck with ease and comfort. Large dog collar 51 - 71cm. The collar should fit comfortably but make sure you can pass two fingers between the collar and the neck. Remember that dogs grow fast, and their collars will need adjusting regularly and eventually need replacing.