3/8" Adjustable Snag-Proof Safety Cat Collar is a snag proof safety cat collar. This durable collar is 3/8" thick made from a high quality nylon that is designed not to fray. It has an elastic loop which allows the collar to expand if it gets caught, so your cat can safely slip out. | Hamilton Products Inc. Adjustable Snag-Proof Safety Cat Collar in Black | Size 10"