DESIGNED FOR DAILY USE / SAFE AT NIGHTRetractable dog leash comes with a LED Flashlight which be powered by 2 AAA batteries (batteries NOT included).One hand braking & locking system. Not only safely walking or running at night, but also could easily adjust to a comfortable length.EXTENDABLE HEAVY DUTY DOG LEASH10/16 feet (360 Tangle-free) is enough to allow you and your pets to enjoy freedom and safe at the same time. Extra-tough nylon ribbon with a strong zinc alloy snap hook spring movement for smoothly retracting, and 10 times longer life than ordinary retractable dog leash, Up to 50,000 times.DURABLE & ERGONOMICDurable ABS plastic casing with ergonomic grip (casing prevents impact cracking caused by accidental falling.) soft rubbery grip material reduce hand strain even on long walks. have 2 sizes could choice: Lightweight leash suits for Puppy Small pets active dogs up to 44lbs; L size suits for Medium Large pets active dogs up to 110lbs.EASY TO USEQuick Lock, Pause and Unlock Button, great for walking, jogging, running, camping and hiking, or out for a leisurely stroll backyard activitiesSERVICE Your satisfaction is extremely important to us. If you have any problems with the dog leash, please contact us with your issue so we can get you a replacement or find a solution to your problem.