The Voyager Step-In Air Mesh Harness in XL size is designed for extra-large dogs with a neck size of 14-18 inches and a chest size of 21-23 inches. Made from light blue mesh material, this harness provides a comfortable and secure fit for your furry companion during walks or travel. The step-in design makes it easy to put on and take off, ensuring your pet's safety and comfort while on the go.