The Premium Tuff Lock Cat Collars are fully adjustable to fit most cats. They have a smooth break-away buckles and are made of soft nylon webbing. The collar's webbing is super strong, yet soft and comfortable around the pet's neck. Box-X stitching ensures maximum strength of all sewn components, buckles are contoured for the most comfortable fit, and welded nickel hardware is used for superior quality. Adjustable fit allows fit from 7" to 11" with a width of 1/2".