Dog line Alpha Multi-Purpose Dog Vest Harness with Removable Chest Plate and Seizure Alert Removable Patches. These harnesses are perfect for service dogs, training dogs, therapy dogs, medical alert dogs and a lot more. These harnesses are made of durable breathable nylon with neoprene lining. Machine washable and weather resistant materials make this harness low maintenance and very practical in all life situations. These harnesses come with removable chest plate to provide maximum comfort for the dog. Chest plates and trim around the harness are reflective for maximum safety. EZ Grab handle provides total control of the dog in any situation. Please measure your dog's girth behind front legs at the widest point before ordering.