Padded mesh chest piece with O-ring leash attachment helps deter dogs from pulling by redirecting their attention back to you without straining their neck. Over-the-head design made with high-quality nylon webbing to provide extra durability. Adjustable slides on shoulder straps and belly strap ensure you get the right fit for your pup. Additional D-ring on the back of the harness for leash attachment, so it can be used like a traditional harness. Size Medium 20-24