Accessory piece to the XLarge Comfy Cone to extend the neck size * For thick necked dogs who need the XL Neck to Snout length, but a larger neck size * Water resistant and repellent and is easy to wipe clean and dry. * Unique reflective binding to help protect you and your pet while going outside at night for walks and bathroom breaks. * Adds 4 inches to the Xlarge neck size * Recommended Animal: Mastiffs & Rottweiler