I bought this ID holder with a collar and leash two years ago for our then 1 yr old Bernese Mnt Dog. He wears this all the time. While only the collar when we need to use his leash. It has weathered our giant dog, his friends and many outdoor adventures over the years and is as good a new, maybe even better. It fits comfortably on his large furry neck without irritation of his fur. It is very strong wo can lead him with it when needed. We are bringing home a new puppy today looking forward to getting her a Karma collar when is ready. Thanks for the amazing quality!