I would like to update my previous review from 11/29/2021. Since I had written a 3-star review, Illumiseen sent me a new leash and it worked perfectly, just like my first one. I believe the second one I ordered was just somehow creased in the packaging process and never straightened out after use. Since they were kind enough to replace it for me, I am now updating to a 5-star review. I absolutely love these lighted leashes and necklaces. My dog is an escape artist and sometimes manages to get entirely out of his harness but his necklace always stays on and makes it easy to spot him. Illumiseen is a great company and they stand behind their products. My dog has become a sensation since I bought these items and loves the attention he gets when people stop to ask where I got them! Thank you, Illumiseen, for your outstanding business and I still tell people to order directly from your website.