You will find these durable collars easy to attach and simple to adjust. Made from the highest quality nylon with extra strong buckles.

X-Small is 3/8" wide and adjusts from 8" to 12"
Small is 5/8" wide and adjusts from 10" to 14"
Medium is 3/4" wide and adjusts from 14" to 20"
Large is 1" wide and adjusts from 22" to 26".