The leash goes tight before you've locked the front door, and you hear that rasp in his throat as he leans into the collar. He isn't going to stop pulling tomorrow. So move where the pull lands. This padded vest dog harness and leash set uses an X-shaped chest panel that spreads the load over the widest part of the body. The panel takes the strain, so a dog who leans into the walk isn't leaning on his neck. Why it's easier on him than a collar: X-shaped chest panel: spreads pressure rather than concentrating it in one band, so nothing digs in when he pulls Soft sponge padding: sits between the fabric and the coat, so the edges don't press a line into him Air mesh lining: open weave against the body, so warm air moves out instead of building up Elastic diagonal weave: gives as he moves, so it follows him rather than holding him in one shape Matching leash included: braided cotton with a padded handle, so nothing else is needed on day one Light enough that he forgets it's on. The whole harness weighs about as much as a set of keys, so a nervous dog stops fighting the gear and gets on with the walk. Diagonal weave outside, air mesh inside. The outer fabric stretches a little and the lining is open mesh, so the vest moves with him and lets heat out rather than trapping it. Cotton rope, not flat webbing. Thick braided cotton with a padded loop handle feels different from a nylon strap. When he surges, your palm takes it, not a thin edge. Getting the size right Four sizes, S through XL. Measure around the widest part of the chest just behind the front legs and check it against the size chart in the product images. Two fingers should slide flat under the straps once it's on. If he falls between two sizes, take the larger one. Specifications Harness: Elastic diagonal weave with air mesh lining Design: X-shaped chest panel with sponge padding Weight: About 2.1 oz (60 g) Leash: Braided cotton, about 4.9 ft (1.5 m), padded handle Colors: Blue, Pink, Green, Yellow Sizes: S, M, L, XL Safety note: Leave room for two fingers flat under the straps, and do not leave the harness on an unsupervised dog. Check the stitching and the leash clip regularly, since a harness is only as strong as the point it is held by. Measure his chest behind the front legs, pick the size, and clip in at the back, and the next walk pulls against his chest instead of his throat.