ThunderShirt Polo Anxiety Vest for Dogs

By ThunderShirt
Rated 4.0677 out of 5 stars


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$49.95Chewy Price
In Stock
FREE 1-3 day delivery

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...Small Breeds, Medium Breeds, Large Breeds, All BreedsExtra Small Breeds, Small Breeds, Medium Breeds...Small Breeds, Medium Breeds, Large Breeds
Closure TypeVelcroVelcroSlip On, BucklePulloverVelcro
Health FeatureCalmingCalmingCalmingCalmingCalming
Top IngredientsPheromone

Questions & Answers

18 Customer Questions

I'm interested in the "Polo" thunder shirt, is it made in USA? If not could you tell me where? I am very interested in supporting USA. This information may help me make a decision. Thank you, you guys are just the best!!!
Answer by ChewyAug 18, 2019
This shirt is manufactured in the United States.

Where does the thundershirt sit on the chest area or does it impact the neck?
Answer by ChewyJun 13, 2018
The ThunderShirt uses Velcro to secure the shirt around the upper part of your pet's chest. It rests just below the neck. Please reference the below image.

How to size
Answer by ChewyJul 25, 2021
To get the most accurate size anxiety vest for your pet, measure the girth of their chest, around the widest part of your dog's torso right behind the front legs, with a cloth tape measure. Pull the cloth tape snug, but not tight. If you don't have a cloth tape measure, you can use a piece of string and measure it with a rigid ruler afterwards. If your pet measures between two sizes, we advise ordering the smaller as this product works through compression.

Do you leave the thundershirt on all the time or only when your dog is getting anxious?
Answer by ChewyFeb 10, 2020
ThunderShirt is designed to be safe to leave on for extended periods of time when appropriate for the situation or issue. If your dog will be wearing a ThunderShirt for more than one hour at a time, we recommend removing ThunderShirt every one to two hours during the initial periods to check for any signs of irritation points. Irritation points are very rare, but it is best to be cautious.

ReviewsWrite a Review

Rated 4.0677 out of 5 stars
310 Ratings
Would recommend to a friend

309 Customer Reviews

Rated 3 out of 5 stars
By Joey on Oct 26, 2023

Velcro noise didn't work for our dog

There is a LOT of velcro (understandably) that has to attach securely. Unfortunately, the loud sound of undoing the velcro (in our case, just in the process of fitting the shirt) completely freaked out our golden. There is no way to ease the velcro apart -- it's really strong. I left the shirt on her for a couple of hours hoping she would adjust to the feel, but she was immobilized and panic-eyed the whole time. Then getting it off was a another ordeal. Just be aware, if your dog is triggered by noises, the velcro can be an issue. For dogs who don't mind the velcro, the shirt is sturdy and well-made.

Rated 2 out of 5 stars
By chewyfanish on Sep 20, 2023

Does not work alone

Absolutely does not work on its own for dogs with severe anxiety like mine. It's not so much the sound of loud thunder & fireworks, it's when it's close and even you can feel a bit of the vibration from the sound that freaks her out. We still have to tire her out with an extended play, walk, or hike, give her a calming treat, put this on, and spray a calming scent on the patch area for her to not react too quickly or at least get calm faster when it's done. Have used it for years and have found this to be only go so far depending on your pup's anxiety level. However, this replaced our old one we had for 7 years as we noticed that it had shrunk over the years, so we went a size up to avoid shrinkage and fits her still good.

Rated 3 out of 5 stars
By Lee on Aug 1, 2023

Just OK

I bought this after the Fourth of July because my furbaby was so frightened by the fireworks and I needed something to help comfort him. The A/C on and the volume of the television didn't drown out the BOOMS. Thunder also have him wanting to crawl under my skin. When I received the shirt I put it on him and he was fine. He liked the firm fit that brought comfort yet once the thunder started in the night he was still shaking like a leaf. I purchased some calming dog chews also. I gave him those. With the shirt and dog chews he is better yet not calm. He likes wearing the shirt and looks adorable yet it doesn't alleviate the fear I was hoping for better. Back to the drawing board!

Rated 5 out of 5 stars
By Barb on Jul 26, 2023

Not sure why but it works

My three-year-old Shiba Inu hates anything that goes bang and we are getting a lot of thunderstorms in the hills of WV. Guess it is like a big hug and she immediately stops vibrating when we get her in this coat. Still whines, from time to time but a whole lot less. Thank you for letting me get some sleep. She wants it off as soon as the thunder stops, but less resistant of us putting it on her after two storms with it.

Rated 5 out of 5 stars
By Boyd on Jun 26, 2023

Help for loud noise anxiety

I bought this thunder shirt for our little Josey, she's a chihuahua/yorkie mix. She can hear the thunder long before we can, so I know by the way she starts shaking what is coming, but after putting her thunder shirt on, she calms down a lot. She doesn't stop her shaking, but she will settle down in my lap while I am loving on her, unlike before when she wouldn't stop roaming around, looking for a safe place to hide. While it doesn't stop her anxiety completely, it sure makes a huge difference, and I think she likes it on at these times too.

Rated 5 out of 5 stars
By Margaret on Jul 8, 2023

It works!

Little did I know a thunderstorm was imminent when I first tried this on my dog. (He shivers at the clothes washer). It really worked. Immediately. I was worried about the size because my guy is very slender but long/tall. The shirt covers half his back but is fine. So happy I got this.

Rated 5 out of 5 stars
By Bobbie2006 on Jul 30, 2023

A comfortable hug

Have used TS for various dogs over the years. The pink shirt material is lighter weight than the older gray shirt. Still wraps the same, a few more Velcros to make more fitting. Plus, a girl dog needs to feel pretty in pink.

Rated 4 out of 5 stars
By Diane on Jul 30, 2023

Not what I expected

It helped a bit, but I really expected the shirt to help stop the trembling and stress that the storms cause. I suspect if I gave him something oral along with the shirt it will have the desired effect.

Rated 5 out of 5 stars
By Bridget on Jul 12, 2023

Amazing Comfort

This thunder coat works for fireworks and thunder and lightning Gracie is so scared and this gives her a gentle hug and although still anxious definitely worked and provided a level Of comfort so anxiety less overwhelming.

Rated 5 out of 5 stars
By Cathy on Aug 5, 2023
Top 1000 Contibutor

Peaceful During a Storm

My dog Anastacia has such anxiety issues when it is storming. This shirt on she is calm and relaxed. I am so pleased. She is sleeping through the storm.