Directions for use:1. Insert the pet’s everyday collar through the inner loops of the KONG Cloud Collar.2. Inflate KONG Cloud Collar via air valve (simply pinch and blow). Inflate collar until it feels full, but isn’t hard.3. Fasten pet’s everyday collar onto the pet and connect the Velcro® strap on the KONG Cloud Collar to close.
Measurements: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.