The collar arrived in excellent condition, I was pleasantly surprised to find out it came with its own well-crafted steel padlock. Attaching the collar was extremely easy and its lightweight construction made it extremely easy to get used to. I've got a 16" circumference neck, so I bought the 18" (Large) size, which fits loosely, but comfortably. I've now worn it straight for 3 weeks and have had no issues with sleeping or showering with it. The only issue I've had is a minor misalignment of the front two holes, but otherwise I love everything about this collar. It definitely gets my thumbs up of approval.