Dog Retractable Leashes by JOYPAWS features extra strength and durability. This retractable dog leash can hold about 40000-50000 times tensile, but still keep consistent retraction. All materials have been strictly inspected and this product passed tensile tests perfectly. More professionally considering the comfort of both humans and pets during designing one product. Focus on the ergonomic design to release the pressure on pets and humans, protection and freedom. Strong and durable nylon ribbon extends 16 feet and is strong enough to pull dogs up to 110lbs. Abs casing and anti-slip comfort grip allows the greatest ease on your dog walk. The ergonomic grip has a pleasant feel with a non-slip surface. You can keep your best friend close by using the lock button to set your desired distance. A Real Warranty, if your belt breaks within one year after purchase, we will quickly replace it for you free of charge.You can contact us directly to get excellent customer service. Remember to use large leashes for pets over 66 pounds.