I purchased this product because my dog had knee and hip surgery. I didn't want him to be crated all day, but he was not supposed to be off leash at any time as he was prohibited from any kind of running or jumping on furniture etc. Holding a leash ALL day was becoming a nuisance so I went searching for an alternative. This was perfect! I can sit and type with both hands at my computer while he lays on a cushion next to me, but I don't have to worry about him darting up to bark at the doorbell or chase the cat. This would make an excellent potty training tool for puppies as well. The best way to teach them to not go in the house is to keep them attached to you at all times. I also purchased a "Fuel Belt" attachment that is like a pouch so that I can have treats on me at all times. The product is well made and is strong enough for a larger dog. The hardware is a bit heavy where you attach the leash to the collar which could be a problem if you have a tiny dog like a chihuahua. Overall I'm very satisfied with my purchase and I can't wait until my dog is able to go for walks again. We will definately be using this for its intended use when the time comes.