Elegant and quality fashion choice. Made of high strength nylon grid and have sewn polyester/nylon decorative ribbons that are brightly colored, stain resistant and do not fray or fade over time. All the collars have solid cast brass hooks, which guarantee safety and durability over time. Made in the USA. Measurements: Up to 10 inches (Teacup), 6-12 inches (XS), 9-15 inches (S), 12-18 inches (M), 15-21 inches (L), 18-24 inches (XL), 21-27 inches (2XL). Machine washable cold, gentle cycle, and can be air dried.