Hamilton Deluxe Double Thick Nylon Dog Collar Deluxe nylon dog collar made with Hamilton commitment to quality Made of the highest quality nylon webbing and color coordinated stitching All cuts are finished away from neck to avoid irritation Hardware is strength tested for long lasting durability When measuring pet's neck or chest to ensure proper and comfortable fit, add 2 inches. When measuring pet's neck or chest to ensure proper and comfortable fit, add 2 inches.