The Soft Air Mesh Harness by Hamilton is adjustable to provide the perfect, custom fit.  The soft, strong mesh allows cool air to flow through so your dog stays cool.  Cleverly designed to apply even pressure on the chest and is trimmed in soft material to combat binding and chafing.  The soft Air Mesh Dog Harness is the most humane way to walk your dog by eliminating undue pressure points and neck strain.  The Soft Air Mesh Harness by Hamilton is available in Extra Small and Small for toy and small breed dogs, Medium, Large, X-Large and XX-Large. And in three different Styles: Basic - MHB, Vest – MHV, Backpack - MHP The Soft Air Mesh Harness is recommended for gentle walkers.