THUNDERSHIRT Classic Anxiety & Calming Vest for Dogs, Heather Grey, XX-Small -

ThunderShirt Classic Anxiety & Calming Vest for Dogs, Heather Grey

By ThunderShirt
Rated 4.0542 out of 5 stars

$39.95Chewy Price

In Stock
FREE 1-3 day shipping over $49

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

Questions & Answers

45 Customer Questions

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.

Please provide the length measurements - for the small and the medium. Thanks
Answer by ChewyJul 09, 2019
The lengths are as follows: XX-Small - 7 inches, X-Small - 8.5 inches, Small - 12 inches, Medium - 14 inches, Large - 18 inches, X-Large - 21 inches, XX-Large - 22.75 inches.

we just purchased a winter coat for our beagle lab mix, fits her snuggly. she likes her little coat and that's when we noticed it calms her traffic anxiety. is the thunder shirt light enough for summer?
Answer by ChewyJun 19, 2018
This shirt is definitely light enough to be used in the summertime or wintertime.

ReviewsWrite a Review

Rated 4.0542 out of 5 stars
1144 Ratings
Would recommend to a friend

1144 Customer Reviews

Rated 2 out of 5 stars
By Crittrlvr on May 15, 2023

Tolerated but not effective

My dog suffers from separation anxiety and loves to lean in and be hugged so we were convinced this would help. She tolerates having it on but it doesn't seem to calm her. She puts her front legs on top of furniture and the chest band pops open so before long, it slides off the back of her. Will keep trying but time and patience may be the best solution.

Rated 4 out of 5 stars
By Becky on Apr 24, 2023

Effective for some stressors

My dog is fearful, anxious and stressed on walks, in the car, at the vet, in a store, when repair or service people are in home, etc. He’s less noise sensitive at home and on walks now, but more anxious and borderline aggressive when he sees other dogs on our walks. The Thundershirt helps with car rides and vet visits, but not when encountering other dogs while leashed on walks. It came highly recommended by multiple trainers and vets. He’s my most fearful dog I’ve had in 26 years of dog ownership and many fosters. He’s not food stimulated on walks or at the vet, but obedience trained at home when calm and attentive. He’s also on many supplements and 3 rx’s for anxiety and behavior modify. The Thundershirts are better made now than they were 15 years ago. Reminds me of body wrapping with bandage material in Tellington Touch Method, be it a dog, cat, horse, or other domesticated animal. Compression on key anatomical areas help calm my dog during some of his anxiety.

Rated 4 out of 5 stars
By MsChiz on May 1, 2023

A help during thunderstorms.

I bought this when my rescue dog freaked out during a thunderstorm. I also bought a supplement to help her relax during storms. The first time we wore it, the supplement didn't get into her system before the storm got bad. The Thundershirt helped some, but she stayed pretty nervous for a couple hours after the storm passed. A couple days later, I saw a storm coming on the radar and got the supplement into her system and put on the shirt. She weathered the storm beautifully. It may be too early to get a real measure of how this will work out, and we are heading into the season where there are lots of fireworks here, too.

Rated 5 out of 5 stars
By PrinceKJ on May 27, 2023

Very Helpful

The Thunder Shirt is very well made, good quality materials. I did not use it for anxiety, but my golden doodle had surgery to remove a cyst on the left side of his body. This required 9 staples to close the incision. I used the Thunder Shirt as a protective layer so he could not lick or scratch at the wound at night and when I was at work.

Rated 4 out of 5 stars
By YorkieGirl on Apr 4, 2023

No anxiety miracle, but a positive calming effect.

Our tiny Yorkie girl becomes a bundle of nerves whenever she hears fireworks, thunderstorms, and construction noises, and we finally tried this product after our vet and groomer both recommended it for years. We followed the sizing chart, and the size XXS we ordered does fit her 5lb body and 11” girth pretty well. There probably isn’t any magic sewn into the Thundershirt’s materials, but you can tell it’s high quality, and the weighted fabric and numerous flaps fit snugly in all the right places. Does it work? A little. It has a noticeably calming, almost-sleepy effect on her, and she does prefer the vest to not wearing it when the outside world gets a little too much. But is this vest any match for the Fourth of July or a jackhammer sounding next-door? Nope.

Rated 4 out of 5 stars
By Havenmaven on Mar 31, 2023

The jury is out

Our 14-year-old American Staffordshire has developed such bad separation anxiety in the last year and a half. I initially tried the thundershirt treats which didn't seem to help. We've tried blocking him into two rooms as he was trying to climb the stairs to get to the bedrooms, but he can't get back down. I have pads all over as he is toileting in the house now. He has also gotten into food, so now all the food is up high. I'm sleeping downstairs with him. So I got this vest which he seems to like. And he looks super-dapper in the gray. So we put the vest on for a good part of the day and/or night. We walk him before we leave, we only allow him in the two rooms. I went back to the old food (Wilderness Duck) as I had switched to the Basics, trying to avoid grains. I give him two hemp treats from another brand, and I hide two probiotic treats in a toy which supposedly gives him something to focus on to get to the treats. I also give him a nudge stick before I leave. We leave the curtain open so he can see outside, and my car has been parked outside the window. If all is well when we return, he gets another nudge. Along with all the loves.

Rated 5 out of 5 stars
By Lindsay on Mar 14, 2023

Exactly what I was hoping!

I recently rescued my first dog, the vet thinks she's six years old. I found her in the middle of a storm, she'd clearly been wandering for quite some time as the location was in the middle of nowhere (if she wasn't dumped). I had her for a couple weeks, just in heaven happy with each other. And then it stormed. Having Panic Disorder and PTSD myself, I knew exactly what I was seeing. I called the vet, she said she thought I was right it was storm anxiety and recommended this. I watch the weather now and put it on her and it's like night and day. She can tell when she's about to get anxious and will paw at it to let me know. Worth every penny.

Rated 5 out of 5 stars
By Gretchen on May 4, 2023

Works wonders!!

My Sammy is a high anxiety dog and I had tried everything to help him feel comfortable. Since he started wearing the Thunder Shirt he doesn’t get as agitated quickly and he stays calmer more frequently

Rated 5 out of 5 stars
By wematt007 on May 14, 2023

Helps with anxiety

Helps with thunder anxiety. Also use anxiety treats and music. I tried the Large because the original extra large was hard to put on but this large was too small. Sticking with the extra large.

Rated 5 out of 5 stars
By Mom553 on May 16, 2023

Thunder shirt.

I didn’t know what size to order so I ordered a large and X-Large. We ended up using the large. Our Grandpet is a red healer and he loves it. Keeps him calm and less pacing.