The ZenCollar Inflatable Recovery Collar protects pets post surgery or from hot spots or other wounds on the body. It's composed of a durable outer jacket that protects the interior inflatable bladder. The inner diameter of the jacket has collar loops to thread the pets' everyday collar for a secure fit. The major benefits of the inflatable style protective collar are: it does not block peripheral vision, lightweight design, machine washable, will not mark or scrape furniture or walls.