These braided Sequoia collar material is perfect for Martingale style collars. The Martingale collar is designed to provide an even steady pull when necessary and to release when pressure is reduced. Designed for comfort and practicality, this collar goes to new heights when combined with our soft braided Sequoia material. All of our martingale collars are adjustable and feature heavy duty, welded steel rings at all pressure points. This is our chain pull style.