Blueberry Pet 3/8-Inch Better Basic Classic Solid Dog Collar, X-Small, Light Emerald Green X-Small Width 3/8", Neck 6-10" X-Small Width 3/8", Neck 6-10" Made of high density nylon, which imparts softness and durability to the product. This collar is a single product. However, it comes with matching leash/harness to complete the look. Leash and harness sold separately. Picture was taken from a size Medium (Width 3/4", Neck 14-20")