Thundershirt
3 verified products
Browse on Amazon →Last verified: April 2026
Read our full verification: Is Thundershirt Made in USA?Est. 2009
Thundershirt has been manufacturing products in Durham, NC since 2009. We carry 3 verified American-made Thundershirt products.
Heritage and History
Thundershirt was founded in Durham, North Carolina in 2009 after founder Phil Blizzard found that wrapping his dog Dosi in a T-shirt during thunderstorms noticeably reduced the dog's anxiety. The concept was based on existing behavioral science research showing that gentle constant pressure activates the parasympathetic nervous system, reducing anxiety responses in humans and animals.
Veterinarians and animal behaviorists quickly recognized that Thundershirt was addressing a real clinical problem — anxiety is among the most common behavioral issues in companion animals, and existing treatments were limited to pharmaceutical sedation. A drug-free approach with clinical evidence of effectiveness filled an obvious gap.
Made in Durham, North Carolina
Thundershirt products are sewn and assembled in Durham, North Carolina, where the company maintains quality control over the fit specifications that make the product effective. The wrapping mechanism requires precise sizing to apply consistent gentle pressure across the chest and torso — too loose and the pressure effect disappears, too tight and the wrap is uncomfortable.
Durham's Research Triangle location provides access to veterinary research expertise that informs product development. The clinical claims Thundershirt makes are backed by actual surveys showing over 80 percent effectiveness for anxiety reduction in treated animals — unusually strong evidence for a non-pharmaceutical product. American manufacturing ensures the product is made consistently to the specifications that produce those clinical results.
Quick Picks
Thundershirt Dog Anxiety Jacket Heather Grey Medium
Thundershirt
Health & Personal & Care
Frequently Asked Questions
Is Thundershirt made in the USA?
Yes. Thundershirt manufactures 3 verified products in Durham, NC. Thundershirt manufactures anxiety wraps for dogs and cats in Durham, North Carolina, producing a clinically proven product that uses gentle constant pressure to calm pet anxiety during thunderstorms, fireworks, separation, and travel.
Where is Thundershirt manufactured?
Thundershirt is headquartered in Durham, NC. Manufacturing takes place in Durham, NC.
What Thundershirt products can I buy?
We carry 3 verified Thundershirt products across Health & Personal & Care. Every listing links directly to Amazon with verified American manufacturing.
When was Thundershirt founded?
Thundershirt was founded in 2009. Thundershirt manufactures anxiety wraps for dogs and cats in Durham, North Carolina, producing a clinically proven product that uses gentle constant pressure to calm pet anxiety during thunderstorms, fireworks, separation, and travel.
Does Thundershirt ship from Amazon?
Yes, all Thundershirt products listed here are available on Amazon with free shipping for Prime members.