Description:High Quality: This anti crow chicken collar is made of nylon, the collar is adjustable, safe and durable.Adjustable: Our no crow rooster collar is easy to adjust the tightness according to your rooster neck size. Flexible and Breathable: The rooster collar is designed to significantly reduce the volume and frequency of crowing, durable and can be used for a long time.Purpose: The poultry collar can effectively prevent rooster from crowing disturbing neighbors rest.Widely Use: Suitable for chicken, duck, goose and other poultry.Specification:Material: NylonSize Chart:18x2cm/7.09x0.79inchPackage Includes:2 Pieces Chicken CollarsNote:1. Due to the light and screen difference, the item's color may be slightly different from the pictures.2. Please allow 1-3mm differences due to manual measurement.