Durable for Large Dogs - Suitable for dogs up to 50kg. Extendable Dog Leash, 5m High Strength Nylon Tape No Tangle 360 with Durable Anti-Rust Swivel Hook and Impact Resistant ABS Material, Superior Durability Internal Coil Spring for Years of Consistent Retraction. Reflective Dog Leash - The leash tape is embedded with white reflective materials. Highly reflective cord leash increases visibility for you and your dogs to ensure safety at night. Quick Lock and Unlock Function - Easy Roll-On and Roll-Off with your thumb. Anti-slip button design increases thumb comfort. 360 Tangle-Free, great for walking, running, jogging, training, camping and hiking, or just a stroll around the yard.Super Comfortable Handle - The anti-slip handle design is fully in line with ergonomic standards, your hands won't feel sore even long walks.Note - Please don't try to open the leash case, because there is a coil spring loaded inside that may be dangerous. When you receive the product, if you are not satisfied with our products, just contact us at any time, we will get back to you within 24 hours. Try our best to make things right. We just hope you have a pleasant shopping!