The ribbon collar is made from high-tensile strength nylon webbing with sewn on polyester/nylon ribbons.  Ribbons are stain and fray resistant, designed to last a lifetime. Lead hardware is cast, not welded brass for extra strength. The buckles are Coast Guard approved for high weight hold. Machine wash cold, air dry. Proudly Made in the USA. Sizes from XS to XL; Widths 5/8" and 1".