Upgraded Material to Keep Dog Safe: Unlike typical dog tie out, our dog line for outside between trees is made of high strength rescue rope with reflective strip, glow-in-the-dark, improve your dog's visibility and ensure its safety at night. The overhead dog camping leash minimizes the chance of your pets to get strangled or wrapped around trees or picnic tables with providing more space and freedom. High Quality and Tangle Free: Compared to most dog camping tie out that use weak buckles or clips, Coolyard dog tie out trolley system is equipped with a strong 360° rotating single pulley and finished with heavy M8 locking snap hook/ clasp, which made of #304 stainless steel, anti-rust, wear-proof. The strong single pulley can rotate 360°, provides more space and freedom for dogs/ pets without tangling. Lightweight & Portable: The overhead dog trolley system is lightweight and comes with a portable bag for carry and storage. You can easily take it out for camping, hiking, park, yard, garden, beach and other outdoor activities. Give dogs more space and freedom to walk, exercise, train and move, while keeping the dog safe. Suitable for large, medium and small dogs.