ThunderShirt Classic Anxiety & Calming Vest for Dogs, Heather Grey

By ThunderShirt
Rated 4.0554 out of 5 stars


Selected: Size:


Selected: Size:

$32.00Chewy Price
$44.95Chewy Price
In Stock
FREE 1-3 day delivery on first-time orders over $35

About This Item


  • Patented design applies gentle, constant pressure to calm anxiety, fear, and over-excitement. This gentle hugging produces a dramatic calming effect.
  • Calms your dog during fireworks, thunder, separation, travel, vet visits, grooming, and much more with no training and no medication.
  • Comfortable and easy on/off. Made of durable, breathable, soft fabric that is washable.
  • Recommended by trainers and veterinarians to relieve stress-related behaviors such as jumping, excessive barking, and inappropriate marking.
  • Proven effective in over 80% of dogs.

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Play Video: Learn More About ThunderShirt From Our Team of Experts
Learn More About ThunderShirt From Our Team of Experts

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Breed SizeExtra Small Breeds, Small Breeds, Medium Breeds...Extra Small Breeds, Small Breeds, Medium Breeds...Extra Small Breeds, Small Breeds, Medium Breeds, Large BreedsExtra Small Breeds, Small Breeds, Medium Breeds...Extra Small Breeds, Small Breeds, Medium Breeds...
Closure TypeVelcroVelcroVelcroVelcroVelcro
Health FeatureCalmingCalmingCalmingCalmingCalming

Questions & Answers

46 Customer Questions

I bought the small, but it’s too big. How do I exchange it for a XS?
Answer by DeeBJun 26, 2023
If you don’t get an answer here then call them. They have great customer service and I’m sure you will get taken care of.

My pit has anxiety 🙆🏻‍♀️. My question or concern is the Velcro he doesn’t like the sound at all. Has anyone had an issue with the Velcro?
Answer by kimJul 04, 2023
try the "polo" thundershirt

How does this work with separation anxiety?
Answer by ChewyDec 11, 2017
The ThunderShirt uses gentle, constant pressure to calm anxiety, fear, and over-excitement. This gentle hugging produces a dramatic calming effect while slowing the heart back down to a normal rate.

Can you have this on your dog all day?
Answer by ChewyMay 13, 2022
Most people say that their dogs and cats really enjoy wearing their ThunderShirts and they are safe to leave on for extended periods of time depending on the issue. But, please note! We recommend removing ThunderShirt every one to two hours the first few times to be sure everything is fitting correctly and your pet is happy. Irritation or other issues are very rare, but it’s always best to be cautious. AND, always remove the ThunderShirt at least twice a day if used for extended periods.

ReviewsWrite a Review

Rated 4.0554 out of 5 stars
1245 Ratings
Would recommend to a friend

1235 Customer Reviews

Rated 5 out of 5 stars
By Kate on Dec 2, 2023


This package arrived in less than 24 hours! And magically, about 5 minutes before it started storming. My dog is usually shaking so much that you can hear him rattling under the bed, and he is laying sleeping at my feet, calm as can be with this thunder shirt. I’m so grateful for how quickly it came and how quickly it worked!

Rated 4 out of 5 stars
By Jane on Nov 12, 2023

Received today - 11/11/23

Before I get too far along, I wanted your thoughts if I should get him the medium? He's 22 pounds so I followed the size guidance which 18-25lbs is a small. I think his length is greater than the weight because it looks so small lol I only gave it a four because I have not had it a full 24 hrs and I'm wondering if he should get a bigger size (it looks like he's wearing his baby brother's jacket lol ).

Rated 5 out of 5 stars
By Leslie on Nov 22, 2023


I have a very hyper American Bulldog. He is the only dog I have ever had that fights sleep. We have a hard time taking him to the vet. This shirt is amazing. He calms down as soon as I put it on him. I was scptical at first. I would highly recommend this

Rated 5 out of 5 stars
By Allison on Oct 25, 2023

the best

Our sweet girl has gotten more anxious as the years have passed. She’s about to turn 14, and definitely seems antsy and restless, particularly in the late afternoon/early evenings. The thundershirt helps significantly…I think she would keep it on 24/7 if it was up to her. We have 2. I highly recommend it to soothe an agitated pup.

Rated 5 out of 5 stars
By Joseph on Dec 1, 2023


Fits well, easy to put on and looks good on Taffy. Not sure if it calms her down yet. Was recommended by trainer to possibly calm her down when visitors come to our house. Will let you know later.

Rated 5 out of 5 stars
By sheila on Nov 7, 2023

The thunder shirt helped our old dog immediately

Our dog had a 3rd episode of debilitating vertigo when we thought to try a thunder shirt. He immediately was more stable and had less staggering to find his footing. We found it to be immensely helpful to him, and, thus, to us.

Rated 5 out of 5 stars
By Mary on Sep 17, 2023

Helped my little girl immediately. Wish I had bought it sooner.

My peke was so terrified of thunder storms and fireworks that I could not get her to go outside after a storm or when it looked like it might rain. She would shake like a leaf. I could not believe my eyes when she immediately calmed down after I put it on her during the next storm. She totally calmed down and laid on the recliner like nothing was happening. I should have gotten this years ago.

Rated 5 out of 5 stars
By Carla on Aug 23, 2023
Top 10 Contributor

These do help!

I bought Paris her first Thundershirt 3 years ago during the Fourth of July. She is terrified of fireworks, gun shots, thunder and lightning basically anything that makes a loud noise and gives off vibrations. This along with calming supplements helped her through the holiday. She was still anxious but not bad. This year when I noticed Gypsy was scared of fireworks I decided to get her one and see if it would help her like it did for Paris. It worked wonders for Gypsy. She was calm and even went to sleep during the fireworks. The Thundershirt works for both my dogs differently but they do work. Paris just requires more help during stressful situations. Definitely recommend this product.

Rated 5 out of 5 stars
By Sherry on Aug 4, 2023


We purchased our ThunderShirt about 2 years ago, and have been using it on and off with our dog, noticing changes in his behavior here and there through the years with thunder, fireworks - with his anxiety and such; but not like tonight! We had thunder rolling through out neighborhood terribly this evening. Gus just would not settle down. He was trying to knock over everything from my dresser to our TV. He basically destroyed our bedroom. His behavior has gotten so bad that he had gotten medication from the vet, because I didn't think his ThunderShirt really made that much of a difference. So after nearly 2 hours of Gus panting, making a mess of our bedroom, and crying, I finally went downstairs and just had his ThunderShirt placed snuggly on him; we went back up to our bedroom; he lied on his bed, and calmed down and that was the end of it!!!!!! I couldn't believe it!!!!! It was still raining and thundering outside!!!! I wouldn't have believed it. I sure wished I did that earlier!!!!

Rated 4 out of 5 stars
By PilcherPack on Sep 29, 2023
Top 500 Contributor

So far looks promising.

I have a Great Dane and originally ordered the XXL based on the measurements, however it was to big so I ordered the XL and it fits like a glove. Be sure to double check your measurements! So far it seems to help, but time will tell if that remains true.