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.