
Most customer reviews seem to indicate sizing issues. I also. I have the original Thundershirt and the neck and chest have plenty of room to maneuver thanks to the generous velcro so I decided to size by length. I had to search another Thundershirt website to measure the length of the cape. According to this site, the XS is 14-16 inches long. My dog size is 13-14 inches and my original Thundershirt turned out to be XS so I ordered XS with confidence. It arrived. Too short. Body length 10". See photo. Enough said.

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