SIZE --- You can choose S size (10ft) and L size (16.4ft) of traction rope according to your own habits, 10ft of traction rope is suitable for pets up to 22lbs, 16ft of traction rope is suitable for pets up to 33lbs. NO TANGLE --- Tangle-free 360 swivel leash and easy-adjust retraction make you no worry about your dogs getting twisted while walking, allow your dogs to move freely around you. EASY TO USE --- Quick lock, pause and unlock button- easy to operate with your thumb. Tangle-free, great for walking, jogging, running, camping and hiking, or out for a leisurely stroll backyard activities. COMFORTABLE HANDLE --- Ergonomic TPE anti-slip handle is easy and safe to grip, provides enjoyable walking experience with your pets, don't worry about the dog leash will hurt your hand. DURABILITY & SAFETY --- This dog training leash is made of strong nylon, durable and protect your dogs perfectly.