Dimart Dog Chest Harness with Leash - Lightweight Yet Sturdy Adjustable & Breathable Mesh Vest for Small & Medium Dogs Breathable air-mesh fabric to keep your dog feel cool and dry in the outdoor. Adjustable chest belt and quick-release buckle for right size, make them feel comfortable. Choke free harness has no thin straps to dig in and hurt your pet and is washable for easy cleaning. Recommended for small pet breeds. All breeds are different so please measure your dogs chest first and refer to our size details below. Please measure your pets chest just behind the front legs and up to the top (back) with a measuring tape or string for correct fit.