ThunderShirt Anxiety Vest for Cats, Heather Grey

By ThunderShirt
Rated 3.6966 out of 5 stars


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$19.99Chewy Price
$44.95Chewy 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 cat 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 scratching, excessive meowing, and inappropriate marking.
  • Proven effective in over 80% of cats.

See More



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

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Closure TypeVelcroSlip On, Buckle, N/A
Health FeatureCalmingCalmingCalmingCalmingCalming
Top IngredientsAnalogue of Feline Facial Pheromone: 2%. Exipients to: 100gFeline Pheromone Complex (FPhC) 2%, Isoparaffinic hydrocarbon 48 mLPheromone

Questions & Answers

22 Customer Questions

Does this work well for urine marking?
Answer by ChewyNov 09, 2017
ThunderShirt Anxiety & Calming Solution for Cats is recommended by trainers and veterinarians to relieve stress-related behaviors such as scratching, excessive meowing, and inappropriate marking.

My cat is about 12 pounds with very long hair which makes her a little bigger. Is is better to get the large to make sure it fits, or the medium because it should fit tightly?
Answer by ChewyNov 16, 2017
The Thundershirt is designed to be tight, almost like an embracing hug.

Foes this short reusable and washable?? I'm about to leave her with my sister for a few months then bring her with me to another country. How often should my cat wear the shirt while she stays with my sister?? Thank you
Answer by ChewyOct 07, 2018
This shirt is reusable and washable, and should not be worn for more than 5 hours at a time. Using it for longer may cause the jacket to lose its effect and the cat could become desensitized to the jacket.

Is good when doing the nail clips in my cat?
Answer by ChewyJun 01, 2019
Thundershirt’s gentle, constant pressure has a dramatic calming effect for most cats if they are anxious, fearful or overexcited during grooming.

ReviewsWrite a Review

Rated 3.6966 out of 5 stars
234 Ratings
Would recommend to a friend

234 Customer Reviews

Rated 3 out of 5 stars
By Jane on Aug 15, 2023


I ordered a large because I have a Maine coon. It fit around his chest, but the front band was much too wide and interfered with his walking. There was no way to adjust it. He has very long legs and body, but not a deep front chest. It was completely useless because it disturbed him to be on. I have successfully put a harness on him for going outside. I had a "comfort shirt" from another company that I had bought for my Sheltie and that was a little better, but not great. The fabric and construction on the ThunderShirt seems too stiff. The other one I have is a softer knit and more accommodating.

Rated 4 out of 5 stars
By Debbiecat on Jul 9, 2023

Seemed to help

My cat is five, and though I’ve had him since he’s 10 months old, whatever trauma, he went through as a kitten, still haunts him. He’s extremely skittish, afraid of people and noises. I bought this in preparation for July 4. He wanted no part of it, but little by little I drew him to it with treats. He started sleeping on it. I tried to cover him with it, and that wouldn’t work. Eventually, I just went for it. It’s not the easiest thing to get onto a stubborn animal. The first time I tried, he was out of it within five minutes. OK, the fold was mine for not securing it tightly enough. When the fourth arrived, and the noise began, we were ready. At first, Shadow didn’t know what to make of this thing that was holding him close. He didn’t try to get out of it, and no, the noise still bothered him, he was much calmer than he otherwise would have been. I will say, however, that it is rather difficult to get on.

Rated 1 out of 5 stars
By Momo on Aug 23, 2023

siginificant gaps between sizes

The large that was recommended for my lean 13lb Boy was way too big, but the medium is much too small, and neither had any calming effect. I don't know whether the poor fit is to blame, or if my cat wouldn't have responded favorably regardless, but our whole experience with Thundershirts has been stressful, expensive and disappointing.

Rated 2 out of 5 stars
By Jeam on Aug 18, 2023

Really wanted to like this

I originally ordered the medium for my cat based on the sizing recommendations. It was way too small, and Chewy was amazing about exchanging for the large. I was so excited because I love the thundershirt for my dog. But the cat large is way too big for my cat. I’m really bummed that the sizing is so wonky. Also, as a note, there is no removable collar on either one, so don’t purchase assuming they will have that feature.

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


My cat's been having more and more anxiety as he's gotten older. Loud noises like thunderstorms, fireworks, and sirens make him jump, so I wanted to have something like this on hand if we needed it. He's okay wearing it for about 5 minutes but at the 10 min mark gets a little roly-poly "can't walk, get this off me." We'll keep trying. He tolerates it much better than sweaters/harness, so I'm optimistic.

Rated 1 out of 5 stars
By Ellie on Sep 26, 2023

Didn’t work for my cat

My cat was very uncomfortable and he couldn’t even walk or jump in this vest. A little cat hoodie sweater works better than this item. I ended up getting a refund and donating it.

Rated 5 out of 5 stars
By Thunderbuddies on Jul 23, 2023

Thunder Buddies!

My boys look so cute in their matching thunder shirts. Definitely helps during storms! Tony (kitty) is still getting used to it, he is very dramatic walking in it, but he does seem calm laying down in it. Mikey (dog) is a long time user, and loves his vest, he is very proud of his brother wearing this with him!

Rated 5 out of 5 stars
By Cecilia on Jul 5, 2023

Best Purchase! Ease of mind for myself and my girl

My youngest cat gets very skittish, after a thunderstorm where she spent over an hour with me under the covers scared I decided to get this before Fourth of July. I’m so glad I did, as soon as she started getting skittish I put this on and she was relaxed the rest of the evening with me. Cleaned her paws, ate and snoozed just like she normally would. So grateful for this!

Rated 5 out of 5 stars
By alycat97 on Jul 19, 2023
Top 1000 Contibutor

Helps my cats SO much!

This anxiety vest has helped two of my four cats with adjusting to a new home, a new pet, and lots of new changes in their life. This is easy to put on. The Velcro sound does make my cats a little nervous, but it is much quicker then trying buttons or zippers.

Rated 5 out of 5 stars
By Buddy on Jul 6, 2023


Our new kitten has been high strung since the day we got him. Night time was a nightmare. Since getting the Anxiety Vest he is so relaxed at nighttime now! It is almost too good to be true but it is. He stays in the Anxiety Vest from 10 pm to about 5 am. I wished I had this 4 months ago. Highly recommend!