After trying out 4 different types of harnesses for our pulling dog (she broke 1 on a walk!!) this is finally a product that works!! Walking my dog has never been so enjoyable as it was with this harness on. If the dog pulls when walking it will pull them sideways since the hook is in the front of their chest and not on top of their back. This seems to be a gentle way to correct them, since they do not want to be walking sideways! I have a wheaton terrier and didn't think that a 40 pound dog could pull me so hard, but after trying a few different harnesses out and having no luck this is the type of product that works well. It has 2 different clam areas so it is easy to put on and fits really well. It is lightweight and durable. It was easy to walk and not be pulled and I will go and recommend this to all of my friends. This has been a search 4 years in the making now and everyone knows. I cannot wait to have my friends walk my dog now to see the difference.