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

ThunderShirt Classic Anxiety & Calming Vest for Dogs, Heather Grey

By ThunderShirt
Rated 4.0406 out of 5 stars

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$39.95Chewy Price

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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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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...Extra Small Breeds, Small Breeds, Medium Breeds...Extra Small Breeds, Small Breeds, Medium Breeds...
Closure TypeVelcroVelcroVelcroVelcroVelcro
Health FeatureCalmingCalmingCalmingCalmingCalming

Questions & Answers

44 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 4.0406 out of 5 stars
1109 Reviews
Would recommend to a friend

1109 Customer Reviews

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Rated 5 out of 5 stars
By hilary on Jan 29, 2023

helps enough to be worth it

My 100lb boy lets me put this on him without any issues and it actually helps him not shake and pant when there’s thunderstorms. He’s a very scared big baby and it breaks my heart when he is panting and shaking in a corner. When I put this on him before the thunder started he laid in his safe space and didn’t shake or pant. We just moved to the south and thunderstorms to this level are new to him. I put this on his along with his dose of melatonin dog treats and he does ok. Without the vet and just the treats he pants and shakes and doesn’t calm down. The vet and treats combo are key.

Rated 5 out of 5 stars
By adoptadog on Jan 24, 2023

My anxious dog has really calmed down

I've been using a thundershirt for about 6 years for my anxious dog (loud noises, gunfire (we're in the country) or thunder). He really seems alot calmer when it's on. I recently lost the original thundershirt, so I bought a new one. This one actually seems like maybe it's a bit thinner material than the original, but it works exactly the same and is very effective in calming my dog's anxiety. Its not magic, the owner DOES need to follow the directions for getting the dog used to it and making it a 'happyt place' for the dog, before expecting it to calm dog's nerves.

Rated 5 out of 5 stars
By FreyasMom on Jan 16, 2023

It really works!

I have a corgi who is very reactive to loud noises. If someone sets off a firework or there are loud engine noises, she runs to go under the bed, or in the bathroom. She has been on prescription medication, however she still becomes afraid. Adding the anxiety vest has made a real difference! I put it on her and she just goes to sleep. No panting or pacing, just relaxing.

Rated 5 out of 5 stars
By satisfied on Jan 23, 2023


I was skeptical at first but was very impressed at how this ThunderShirt actually calmed down my two Boxers I was actually thinking about medication for my female but this shirt really does work. They both come to me when Its time to put on their ThunderShirts and stand still while putting them on.

Rated 5 out of 5 stars
By Belle on Dec 3, 2022

Amazing, worked within minutes!

My doggie Harmony had no problems with her Thundershirt whatsoever. She has some anxiety, she's a rescue pet. The pictures I posted were taken within the hour of putting the Thundershirt on her, I think the pictures speak for themselves. I was told she's her breed is a "Phantom". She seems to me to be a Schanuzer/Maltese/Yorkie mix. Idk. I just love her. :)

Rated 5 out of 5 stars
By JBon on Dec 3, 2022

Great Dane Approved!

My big boy is a big baby when it comes to thunder and fireworks. He has some meds but they need to be administered a half hour prior to the situation. That isn't always possible. I was hesitant to purchase this item as I wasn't sure it would help and, it is so difficult to find any product to fit a Great Dane. To my surprise not only does it fit!!!, its also a quality product and yes it does help. Is he still afraid? Yes. However he is much better when wearing it and his heart no longer felt like it was going to beat right out of his chest. I do notice a clear difference in behavior. He still.clings to me but no longer trembled and shakes. Don't expect a complete cure bit this product definitely helps.

Rated 5 out of 5 stars
By Lexgeddes on Jan 6, 2023

slowed self harming

Our dog had a very rough start in life, and will go through periods of self mutilation. We’ve tried all sorts of allergy meds, diets, etc., but it’s severe anxiety. She had to wear a cone 24/7, which probably added to the anxiety. This shirt keeps her from tearing her skin to shreds! She’s so chill now, and cone-free.

Rated 5 out of 5 stars
By Valary on Nov 30, 2022

Awesome Shirt, and not just for Anxiety!

I needed a shirt that was thicker than cotton but not overly heavy and hot for my dog who has been recently diagnosed with diabetes. For those with diabetic dogs who wear a Libre sensor, you know they're often times placed in areas on the dogs back where they can scratch at them, or tear off when rough-housing with their friends. The ThunderShirt is the perfect shirt to cover up his sensor and gives me peace of mind that his sensor has a better chance at lasting until the next change.

Rated 5 out of 5 stars
By Ezra on Dec 27, 2022

really works!

Helped my nervous 8mo husky/heeler pup so much with car rides and separation anxiety! Added the pheromone spray to her thunder shirt and ended up with a very calm puppy for our road-trip! Also thank you to chewy for replacing the first frayed thunder shirt pup pup decided to unravel!

Rated 1 out of 5 stars
By Granny on Jan 24, 2023

Didn't do the job

My Rottweiler is a little nervous around my grandson, she barks and jumps at him, I was hoping this would help her calm down around him but the only thing I can tell is she likes to wear it.