SAFE AT NIGHT / BRIGHT LED FLASHLIGHT DESIGN: -- Patented design retractable dog leash with built-in flashlight, which undetachable LED light (Not Including Battery). This unique overall design reduces both size and weight, making it simpler and easier to use than traditional detachable flashlight designs. This new item is very convenient to carry when outside, giving you maximum visibility and safety while walking at night. Give you and your best friend a more secure environment. EASY TO CONTROL / ONE-HANDED BREAK AND LOCK : -- One button brake & lock safety system, which allows the dog leash to be adjusted to a comfortable length with ease, release or stop your best friend as you want just with a button. All the operations only need one finger, ensure that you have easily complete control over your dog's safety.With this adjustable cord, both you and your best friend can enjoy various activities freely. Training, walking, jogging and running become joyful. HEAVY DUTY & ENVIRONMENTALLY FRIENDLY MATERIAL -- Durable ABS plastic Casing, non-toxic and tasteless, lightweight and portable design. Ergonomic Rubberized scrub and anti-slip soft Handle to help you comfortably maintain a strong grip on dogs that are pulling and running.The well-made Nylon Leash provides a long lifetime to use, and the strong internal spring makes the Woven tape extend and recoil smoothly.Heavy duty Snap Hook, Zinc Alloy material, more beautiful, Long-lasting and rust-free. KEEP YOUR DOG MORE FEEDOM AND SAFER -- Two size in available, suit for X-small, Small,Medium, and Large breed: Small Size--can extend up to 10ft, great for dogs up to 44lbs. Large Size--can extend up to 16ft, perfect for dogs up to 110lbs. Flexible leash length will give them maximum freedom while under your control. 360 Rope Angle, Tangle-Free, retraction opening allows you to control your dog from any angle. You no longer have to worry about the safety of dogs running around.