Feature:The sleek material of outer sphere is nylon, the inner is cotton rope.It is a little bit stretch and feels good and soft. It is too strong to be bit and tore by dogs.The weave is very close. This leading leash can serve as collar, its circumference is very large and can be adjusted freely. Descrition:New and high quality, soft, smooth, durable and reusableMaterial: Nylon, cotton ropeColor: Brown, Black, Blue, Red (4 colors for selection, please choose your favorite color.)Size: App.150cm(L) X 9mm(T)Quantity: 1PcsPackage included: 1 X Training leashNotice:1. It's better to adjust the size of collar bigger than that of your pet's neck in case your dog is tightened.2.Due to the differences between monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures.Thank you for your understanding!3.Please allow 1-5cm errors due to manual measurement.