A dog leash with an integrated 3-spring mechanism represents a revolutionary advancement in the world of pet accessories, offering a blend of convenience, control, and enhanced mobility for both dogs and their owners. Engineered with precision and durability, POWER LEASH enables a smooth extension and retraction of the leash. This internal spring mechanism is strategically positioned within the leash handle, ensuring a secure and COMFORTABLE experience for you and your dog. While only giving a certain degree of freedom for your dog. POWER LEASH is designed to be a trainer leash, casual leash, running leash, biking leash, all in ONE. - 27.25 INCH LENGTH AT REST. - RECOMMENDED MAX STRETCHED LENGTH OF 50 INCHES. -- THE SPRINGS CAN HOLD EVEN THE STRONGST OF DOGS, NO MATTER THEIR WEIGHT/BREED/ENERGY. ​ MATERIALS - HIGH QUALITY AND SCRATCH RESISTANT NYLON AND POLYESTER SLEEVES. - HIGH QUALITY ZINC-TREATED STEEL SPRINGS. - HIGH QUALITY ALUMINUM CLIPS. - HIGH QUALITY INTERNAL SILICONE TUBE (CAN WITHSTAND BEING RUN OVER BY A 10,000 POUND TRUCK WITH NO DAMAGE TO THE SPRINGS OR TUBE OR FUNCTIONALITY). - HIGH QUALITY RUBBER SCRATCH-RESISTANT HANDLES. - HIGH QUALITY STEEL AND PLASTIC SCREWS FOR A SECURE STRUCTURE. With its user-friendly design and practical functionalities, the leash with a built-in spring mechanism has become a popular choice for pet owners seeking a reliable and versatile tool for daily walks, outdoor adventures, and training activities. Its seamless integration of technology and usability embodies a new standard of convenience and comfort in the realm of pet care and companionship. Designed for versatility, this leash allows the dog to explore its surroundings within a specified range, granting it a sense of freedom while still maintaining a secure connection to the owner. The spring mechanism enables the leash to retract effortlessly at the touch of a button, allowing the owner to control the dog's proximity and adjust the leash length according to the surrounding environment and circumstances. The spring mechanism, nestled within the leash's center tube, offers a comfortable and convenient way for the owner to maintain control while ensuring a gentle and responsive leash experience for the dog.