Pet Dog Nylon Rope Training Leash Slip Lead Strap Adjustable Traction Collar by Unbranded Soft, smooth, durable and reusable. It is too strong to be bit and tore by dogs. You'd better to adjust the size of collar bigger than that of your pet's neck in case your dog is tightened. Material: Nylon, Rope Length: approx.130cm / 50 inch, Diameter: approx. 0.6cm / 0.23inch Color: Black, Blue, Red(Note:we send color random)