Up Country's Green Market collars and leads come in three widths. Wide = 1 inch, Narrow = 5/8 inch, Teacup = 1/2 inch. Made with bamboo, one of the world's best renewable resources! Soft, comfortable and strong, these collars have an easy wear style. All collar and lead hardware is cast, not welded, brass for extra strength. Our buckles are Coast Guard approved for high weight hold. Machine wash cold, air dry.