I highly recommend this for a lot of issues
if you have a big and strong dog who pulls on the leash or don't know how to walk properly
if you have a big dog who is stronger than you, with this you can easily gain control
if you don't want to use a muzzle but you want control over the mouth and head
if your dog has behavioral issues and needs correction
the dog can open its mouth to eat and drink and do whatever it wants,
it is very light and not heavy like a muzzle
you will get a lot of judgment from uneducated people who have no idea what this is, ignore them, this is one of the best purchases I made, and it helped me a lot with my dog.
my dog trainer recommended this to me and I will keep using it.