Review on Halti Optifit Headcollar - No Pull Optifit Head Collar for Dogs, Ideal for Leash Training, Stops Pulling, Comfortable & Adjustable, Humane Design, Durable & Safe, Effective for Effective Training, Available in 3 Sizes by Sarah Holmes

Pros: The concept is flawless and works great! However. Cons: I *strongly* recommend ordering a size up. I ordered the correct sizes and they are both in the very back of the slack that should have been there. There is absolutely no adjustment space on the muzzle strap, making adjustment impossible. The collar barely fits and is difficult to put on the dog. Poor quality buckle material. The clip is very small which means it won't last long. Which is a shame because it was designed to keep the muzzle strap on the muzzle (if) you're going to war with it. And they will until they get used to it. What I also don't like is that the muzzle strap is so close to the eye. (You can even see it in the manufacturer's photos. I just didn't notice.) The last thing I don't like is the leash ring. That might work, IDK. All I can say is that I don't trust this and haven't used it as a main leash - I've actually only used a 1/2" puppy leash which doesn't break under real tension - that's probably why the manufacturer suggests using one extra line, which I did. Would I recommend it? Yes. But only if it's new* and the user has understood that they shouldn't use it as a main line! Eye and I can't see how this works with too can handle a lot of stress with no ill effects. And I won't believe it... won't be damaged.