“Adjustable cat collar” refers to a type of cat collar that can be easily resized to fit cats of various neck sizes. These collars typically feature a mechanism for adjusting the length of the collar, allowing it to be customized for a snug and comfortable fit on the cat’s neck.

Adjustable cat collars are popular because they offer flexibility and versatility, making them suitable for kittens as they grow into adulthood or for cats with different neck sizes.