Coastal Pet Double Nylon Collar - BlackCoastal Pets Double Nylon Collar Long Series is our deluxe style for large dogs. Coastals high quality nylon is specially processed to prevent fraying and increase the strength. All nylon products are carefully and neatly finished for comfort, appeal and durability. Deluxe style for large dogs Made of high quality nylon Prevents fraying and increases strength FOR COLLARS: Measure dogs neck and place 2 fingers between the dog and measuring device for