OMG!
That looks absolutely horrible for the doggie.
Please consider a good doggie obedience training program with you involved in the process with your poooch.
Also if needed, you could get a leash that pulls on the dog’s harness (chest).. and without prongs or needles in it (!!!)
I don’t think it’s as bad as you think. From the seller.....
About this item
Hidden Dog No Pull Collar: Mayerzon martingale training collar for dogs no pull is NOT simply a cover for a chain collar, the links are built directly into the collar. This anti pull dog collar is camouflaged to look like a regular collar on the outside. There are many judgy people out there who feel spike collars are cruel, but they truly are a great training tool to use to correct unwanted behavior. Helps your dog be more relaxed and calm with it while walking
Safe & Built to Last for Years: Our martingale dog pulling collar features smooth links and soft rubbers, which provide necessary training pressure while protecting the respiratory tract and sensitive areas of the neck. Equipped with heavy-duty nylon and a sturdy D-ring, the walking collar for dogs that pull withstand the pulling force easily and is long-lasting for years to use. Just walking with confidence
Stop Pulling Instantly & Significantly: Our dog walking training collar no pull is highly recommended for unruly & disobedient dogs. Just need one gentle tugging, your dog will feel the collar is on and stop pulling instantly. You will find our dog collar martingale is the right tool to communicate with your puppy effectively! From now on, training will be fun instead of a struggle when you have our dog collar for training stop pulling
That collar! Yuck!
(If Torquemada made K9 accessories...)