Atlas BioThane® Long Line

Extended Training Leash with a Two-Tone Design The Atlas BioThane Long Line delivers the same dependable performance as our original Element Long Line, now with a distinctive two-tone design. Built from 5/8" Beta BioThane, the Atlas features a contrasting accent color at the handle and clip, giving it a clean, modern look without changing the function you rely on. Whether you're working recalls, heading out for decompression walks, or exploring muddy trails, the Atlas is built to perform in every environment. Reliable, easy to maintain, and made for everyday use, it's the same proven long line—just with a little more personality. Beyond the Donation Every Bolder K9 purchase supports our Beyond the Donation program, where we go beyond traditional giving by combining financial support with hands-on volunteer work for dogs and their people. Learn more → Purpose-Built Long Line Design The Atlas follows the same no-frills, all-function philosophy that defines our gear: Ideal for training, recalls, decompression walks, and hiking Lightweight design that's easy to handle over long distances Trusted by trainers, working dog handlers, and everyday dog owners Built for dependable performance in real-world conditions It's a leash designed to work hard while standing out just a bit more. Beta BioThane Construction Made with 5/8" Beta BioThane Waterproof and odor-resistant Easy to clean and low maintenance Flexible and reliable in wet, muddy, or cold conditions Designed to withstand repeated outdoor use Despite its lighter profile, this material delivers exceptional durability and comfortable handling. Strength & Hardware Approx. 700+ lb. per square inch break strength Equipped with custom clip, from lightweight to heavy duty Secured with solid brass Chicago screws Like every Atlas Long Line, it's built with solid brass Chicago screws for dependable strength, corrosion resistance, and long-term reliability. Two-Tone Color Design The Atlas adds a subtle design upgrade without sacrificing function. Primary Color: Runs the full length of the leash Accent Color: Featured at the handle and clip for a clean two-tone finish The result is a long line that looks as good as it performs, with color combinations that let you personalize your gear while keeping the same rugged construction. Built for Dogs of All Sizes From Chihuahuas to German Shepherds, the Atlas BioThane Long Line is designed to handle dogs of any size while giving handlers confidence and control during extended-distance work. Whether you're training, hiking, or simply giving your dog room to explore, the Atlas provides the durability and handling you expect from Bolder K9—with a fresh two-tone look that sets it apart.