We LOVE these collars! We bought our first set of collars about 10 years ago, possibly longer. They held up through a lot of playing between brother and sister, climbing fences, digging under fences. You name it, I feel like we experienced it. These collars are made to last. One of our dogs past away last year and recently got another dog. We knew exactly where to get his collar. Slik Hound is one of a kind. Their stuff is high quality and it is made to last. Our new dog is a Great Dane. He is s...