This is a single-ply Comfort clergy collar from R.J. Toomey. The collar is made of flexible plastic, so it is especially durable. You can be sure that this clergy collar will last for a long time. The collar is easy to keep clean; just wash it with soap and water. This collar is designed to be worn with shirtfronts and collarette-style clergy shirts. The clergy collar fastens with a collar button in the back. This Comfort clergy collar is made in the USA by R.J. Toomey, a trusted company with over 70 years of experience in providing quality clergy apparel and accessories. This clergy collar fits a 16-1/2 inch neck size. The #2 collar is 1.25 inches high. Collar buttons are sold separately.