This Dog Harness is a no pull no Choke design and is breathable an double padded for comfort. XL Size says from 28 to 47 pounds with a neck up to 15.7 inches for best fit. They use environmental friendly material that is durable and designed to put the dog's weight on to the chest not to put pressure on your pets trachea. This harness is designed to be escape proof if fitted correctly.  An American Made Item.