Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Looks great but product design could be improved.

I am OK with the neck strap connected by Velcro assuming a dog that fits the correct size will not be able to bust it open even if it pulls or tugs. But I don't like the missing bottom piece that connect the neck piece to the stomach straps. Without this bottom support, the stomach straps will create a lot of pressure on the dog's stomach should you and your dog want to do a tug-a-war for deciding who's the boss in deciding which direction to go. This would have been a 4-5 star product if they think of dog comfort over production cost.