The KONG Cloud™ Collar is soft, comfortable, and it doesn't interfere with a pet's peripheral vision or their ability to eat and drink. It's great for dogs or cats recovering from surgery or wounds. - Comfortable to wear while recovering from surgery- Tough fabric will not rip or tear- Machine washable- Will not mark or scratch furniture- Inflatable - X-Small collar fits necks up to 6'; suitable for cats and toy breeds.- Small collar fits necks 6'-10'; suitable for cats as well as Jack Russell, Sheltie and similar breed size.- Medium collar fits necks 10'-13'; suitable for Border Collie, Spaniel and similar breed size.- Large collar fits necks 13'-18'; suitable for Labrador, Golden Retriever and similar breed size. - X-Large collar fits necks 18' and up; suitable for Rottweiler, Mastiff, Great Dane and similar breed size.