Yes, I have heard of it. I have been using pressure wraps in my professional practice for several years and they do work. The original pressure wrap, the Anxiety Wrap was the first to hit the market in 2001. It is the only patented pressure wrap and the only one studied in a clinical research study, to my knowledge. It is also the only pressure wrap that uses both maintained pressure and acupressure to achieve its calming effect. The Storm Defender is a similar product but it supposedly works in a different way and the manufacturer does not consider it to be a pressure wrap.
Besides being a professional dog trainer I am a registered nurse and I can vouch for the fact that pressure does in fact work to calm people with autism as well as animals. Dr. Temple Grandin was a pioneer in this area with the invention of her " squeeze machine" some years ago. Linda Tellington-Jones was also a pioneer with her work with T-Touch. The inventor of the original Anxiety Wrap used her knowledge as a Certified Professional Dog Trainer and T-Touch Practitioner to invent the Anxiety Wrap.
I have had clients order the Thundershirt by mistake and we have not seen it to be effective in reducing anxious behavior. To learn more about how the Anxiety Wrap and Thundershirt compare, see this article: http://anxietywrapsays.blogspot.com/2012...shirt.html
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