After my dog broke off of her leash more than a few times, it became scary to take her for walks. I was telling my mom how I wish there was a leash that locked, and then searched the web thinking such a feature had to exist. I’m so glad to have stumbled across Ruffwear. The leash does in fact lock and no matter how I twist and turn it, the lock stays secure. Walks are less stressful knowing that even if she pulls out of her harness, the backup clip on her collar and the secured leash will keep her with me.