I bought the matching collars and wanted to get the harnesses. But the posted pictures showed a harness with a short chest strap. From experience I know this has to be longer to not rub under the dogs armpits. My dogs are a size large but I wanted a 3/4" size on these. I e-mailed the company and they were very accommodating. I ordered a 6.5" chest strap but that is too short. So I am ordering the next batch with a 8.5" chest strap. Also ordering the 3/4" material in large. This matches the 3/4" collar better and is the usual size for my dog's harnesses. Quality product and accommodating customer service! I love showing off the matched sets of collars and harnesses to my friends.