ThunderShirt Classic Anxiety & Calming Vest for Dogs, Heather Grey, Large

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At a Glance

  • Calming
  • All Lifestages

$44.99 (-10%) Chewy Price
$49.99 List Price
Promo, New Customers Only: Spend $49+, Get $20 eGift Card + Free Shipping with code: WELCOME
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FREE 1-3 day delivery
Free 365-day returns

Pay in 4 interest-free payments of $11.25. .

About This Item

Details

  • 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.

Instructions

Learn More About ThunderShirt From Our Team of Experts

Looking for more? Shop All Calming Aids

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Questions & Answers

39 Customer Questions

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 kim • Jul 04, 2023
try the "polo" thundershirt

Can you attach a leash?

Answer by Chewy • Dec 22, 2025
A leash can not be attached to the ThunderShirt Classic Anxiety & Calming Vest for Dogs.

How does this work with separation anxiety?

Answer by Shanquisha.G • Aug 28, 2024
The Thunder Shirt 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 Chewy • May 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.
Reviews
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4.2
Rated 4.2 out of 5 stars
2821 Ratings
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Customers Mention

Chewy identifies key considerations with the help of artificial intelligence and our veterinarians.

Design

81% Positive

Ease of Use

80% Positive

Effectiveness

78% Positive

Material

81% Positive

1786 Customer Reviews

Rated 5 out of 5 stars
By Kelly on Dec 30, 2025

Thank goodness for this shirt for our little one!

Our Bernadette suffers from periods of intense anxiety and after a few trips to the emergency vets and researching the symptoms with her regular veterinarian, we

Our Bernadette suffers from periods of intense anxiety and after a few trips to the emergency vets and researching the symptoms with her regular veterinarian, we purchased this shirt and it has made such a difference. During these episodes, she pants rapidly, scurries under our feet, climbs above our heads on the couch, recliner and in bed and nothing we do helps to calm her down. This shirt does sort of makes her freeze, but it’s similiar to how she acts when we put a cold weather sweater on her. She lays down generally where we put on the shirt and gives into the calmness. It’s a miracle!! It is science based though, similar to swaddling a human baby. It brings her comfort. We pick her up and cuddle with her and she wears it for about 30-45 min to help ease her fears. We always have it with us on trips to our campground just in case something triggers her.

Rated 4 out of 5 stars
By Sue on Jan 25, 2026

She seems to enjoy wearing it

I bought this because my GSP was diagnosed with ulcers, and we were trying to avoid anxiety meds. She seems to enjoy wearing her thunder shirt, and I feel like she

I bought this because my GSP was diagnosed with ulcers, and we were trying to avoid anxiety meds. She seems to enjoy wearing her thunder shirt, and I feel like she is more restful when wearing it. It unfortunately did not eliminate the need to try meds for anxiety. I do recommend the product. Just don’t expect it to work miracles.

Rated 5 out of 5 stars
By Jeff on Jan 2, 2026

The outstanding customer service.

We'd bought a Thundershirt for our Aussie, Lego, who is terrified of thunder and fireworks - and it worked pretty well, but after only a few wearings we noticed

We'd bought a Thundershirt for our Aussie, Lego, who is terrified of thunder and fireworks - and it worked pretty well, but after only a few wearings we noticed that the edges of the Velcro strips were pulled loose in a few spots where the stitching had simply missed catching it. Called to see about a return and was offered a quick free replacement, no return necessary! Quick, easy, a pleasure to do business with, and the new one arrived in time for New Year's Eve fireworks. Yay!

Rated 1 out of 5 stars
By Laine on Dec 30, 2025

Unfortunately it didn’t work

My poor boy is TERRIFIED of fireworks. I got a thunder coat for him and it didn’t do anything. He hides in the bathroom, pants, shakes and tries to wedge himself

My poor boy is TERRIFIED of fireworks. I got a thunder coat for him and it didn’t do anything. He hides in the bathroom, pants, shakes and tries to wedge himself between the wall and the toilet, which he doesn’t fit. For the past 2 years, I’ve spent NYE in the bathroom with him. I’ve tried everything too. Calming chews, thunder coats, even massage. My head massager seems to work the best. I wish there was something I could do!! It’s heartbreaking. My girl starts shaking because she sees him shaking. It’s so sad.

Rated 5 out of 5 stars
By Tess on Jan 26, 2026

Good for anxiety

Our guy is getting older and gets anxious at night. This combined with the thunder Ease calming spray (there’s a patch right in the shirt where you apply 3/4 sprays)

Our guy is getting older and gets anxious at night. This combined with the thunder Ease calming spray (there’s a patch right in the shirt where you apply 3/4 sprays) seem to help him. Make sure you measure. We got a small and it’s still a little big for him when he usually wears a medium in other things.

Rated 4 out of 5 stars
By Ashley on Dec 8, 2025

Helps

Field golden in her 4th year of life decided to become scared of thunder, she hides, paces, shakes and is generally super stressed to the point where I have to hold

Field golden in her 4th year of life decided to become scared of thunder, she hides, paces, shakes and is generally super stressed to the point where I have to hold a towel over her head to get her to calm down, so I was willing to try the jacket. she definitely is calmer, however I think its the distraction of having it on to begin with thats the help. She still hangs out right next to me but the pacing and panting has stopped, but make sure to put it on them when there's not thunder, she gets a little anxious when she sees it coming out, and fights me a little to get it on, but once its on she's good. Worth a try for anyone looking for help with the anxiety and nervousness with storms.

Rated 2 out of 5 stars
By Ellen on Jan 8, 2026

Relief for travel anxiety

Six year old, Charli, shakes and pants during car trips. T-shirt seemed like a great solution. She willingly wore the shirt, no issues. However, it did not provide

Six year old, Charli, shakes and pants during car trips. T-shirt seemed like a great solution. She willingly wore the shirt, no issues. However, it did not provide any relief. In addition, she struggled to move about and/or lay down. Disappointed that this was not the solution for her.

Rated 3 out of 5 stars
By Judy on Jan 17, 2026

Well made

It is well made but I didn’t see a difference in her response to fireworks. I was hoping the undershirt, her ear muffs, calming chews and prescription would keep

It is well made but I didn’t see a difference in her response to fireworks. I was hoping the undershirt, her ear muffs, calming chews and prescription would keep her calm and it did for awhile but once she heard noise it was all over.

Rated 5 out of 5 stars
By Sydney on Oct 10, 2025

Best thing for nervous pups!!

My 90 lb rescue pit is terrified of loud noises after being rescued from a hurricane when she was a baby. I'm talking sits as close to me as possible, shaking, on

My 90 lb rescue pit is terrified of loud noises after being rescued from a hurricane when she was a baby. I'm talking sits as close to me as possible, shaking, on garbage day because the truck outside is a little loud. Bought this for the 4th of July and I was SHOCKED at how much it calmed her down. Her shakes decreased significantly and she laid down after a few minutes with it on. Now, she gets her jacket every trash day and typically falls asleep within 30 minutes, even when the truck passes by outside! No amount of calming treats have ever helped like this jacket does. I just wish I had found this sooner for her!

Rated 5 out of 5 stars
By Mary on Dec 7, 2025

I have purchased this product twice and my pet does great with this

She was a severely mistreated rescue probably used as a breeding dog She was removed by animal control in Florida for terrible neglect and probably exposed to thunderstorms

She was a severely mistreated rescue probably used as a breeding dog She was removed by animal control in Florida for terrible neglect and probably exposed to thunderstorms routinely. So the thundervest is a lifesaver