The Touchcat Bell-Chime Designer Rubberized Cat Collar w/ Stainless Steel Hooks is composed of indestruable rubber with a stainless steel leash hook. Features a bell charm on the front of the Cat Collar and is adjustable. Available in Multiple Colors. Sizing Measurements - (In Inches). Length x Width One Size - Length Circumference - 7.9 - 11.8", Width -.4