

🐾 Wrap your dog in calm — because anxiety is so last season!
ThunderShirt is a patented, vet-recommended calming vest designed to reduce anxiety in dogs by applying gentle, swaddling-like pressure. Lightweight, breathable, and machine washable, it’s proven effective in over 85% of cases for stress triggers like storms, travel, and separation. Easy to use with no training required, it’s the go-to drug-free solution trusted by millions of pet parents worldwide.





| ASIN | B0029PYC3K |
| ASIN | B0029PYC3K |
| Age Range Description | All Stages |
| Best Sellers Rank | #2,267 in Pet Supplies ( See Top 100 in Pet Supplies ) #15 in Dog Relaxants #160 in Dog Apparel & Accessories |
| Brand Name | Thundershirt |
| Breed Recommendation | All Breed Sizes |
| Care Instructions | Machine Wash |
| Color | Heather Grey |
| Country of Origin | China |
| Customer Reviews | 4.2 4.2 out of 5 stars (55,415) |
| Date First Available | May 13, 2009 |
| Date First Available | May 13, 2009 |
| Directions | Thundershirt is an excellent treatment for most types of dog anxiety and fear issues. For many anxieties, we recommend just putting on a Thundershirt and observing the results (No training!). You very well may see significant improvement for noise, crate, travel, barking and others with absolutely no training. For more complicated anxiety cases, we recommend using Thundershirt as part of a behavio… |
| Is Discontinued By Manufacturer | No |
| Item Dimensions LxWxH | 0.45 x 7.65 x 10.35 inches |
| Item Package Dimensions L x W x H | 10.09 x 6.54 x 1.73 inches |
| Item Weight | 0.24 Kilograms |
| Item model number | EU HGM-T01 |
| Item model number | EU HGM-T01 |
| Language | English |
| Language | English |
| Manufacturer | Central Garden & Pet |
| Manufacturer | Central Garden & Pet |
| Material | Polyester Blend |
| Model Name | Classic |
| Number of Items | 1 |
| Product Dimensions | 0.45 x 7.65 x 10.35 inches; 8.47 ounces |
| Size | Medium |
| Specific Uses for Product | Coat |
| Style | Jacket Only |
| Target Audience Keyword | dogs |
| Warranty Description | Eligible for return and refund |
L**A
Undershirt really works!
I am so happy with this product. I have an American bully and he can get rambunctious, especially at night time. I put the shirt on him and he was like a different dog. It immediately calmed him down and he went right to sleep. . Now when he gets rambunctious at night I tell him all right I’m putting the shirt on you. He looks at me and then walks to the couch and goes to sleep. He did this twice already, hilarious, but it really does calm my dog down. This is an unbelievable product!
J**N
worth the money
I bought this for my older dog who lost his hearing (due to age) and would freak out with storms. The size was a little big on him but better than small. The material was great. Not to hot for him but worked great to hug him and help alleviate a large amount of anxiety with storms. It worked great for him and was a good purchase. (He is now deceased and it has been about a year when I bought this for him. Again, it was a good investment for his anxiety).
S**A
Seems to be working. Issues with Amazon's sizing - in review.
OK - currently I'm rating this 4 stars, but I may come back and change this depending on how things continue to go. For some background - I have a chihuahua mix who is deeply attached to me. He has issues with separation anxiety and a hyper-aggressiveness toward other dogs, particularly large dogs. If he so much as sees a dog or anything else that may be threatening (a person walking by or a noise downstairs) he will start barking as ferociously as a chihuahua can bark. It's problematic for me because he is an agility dog and I have to constantly be aware that he may try to attack the dogs near me at any moment he feels like they're encroaching on his territory (namely, me). I've done obedience training with him since he was 10 weeks old and he's a SUPER well behaved dog aside from these issues. After researching online, I came to realize that he may be suffering from some form of anxiety, which is causing him to act out because he feels threatened. Thus, I came upon the Thundershirt. I'm really not the type of person to purchase items that seem gimmicky, and admittedly, this shirt screams gimmick. However, with nearly 600 reviews on Amazon and a 4.5 star rating, I had to try it. Anything is worth trying if it will remedy a big issue in my dog's life. I don't want him to feel like he has to protect me all the time as that causes undue stress. So, after receiving the shirt, I opened the box and was greeted with a very cute plastic packaging for the shirt. Almost like a manilla envelope except see-through. The shirt was very well made and soft to the touch..but I was more concerned with testing it out rather than inspecting the intricacies of how it was made. I put it on my dog after taking a moment to think about the logic behind the velcro straps and it fit him nice and snug. I ordered an extra small - my dog is about 8 lbs but very lanky and it fit him perfectly. I opted to go with the sizing on the Thundershirt website vs. the Amazon website as I've been burned by Amazon having improper sizing info in the past. I was debating on an XXS vs. a XS. For example - on Amazon an XXS states: Size XXS for dogs less that 12 pounds and with a chese size of 9" - 13.5" Whereas the Thundershirt website states: Size Chest Size Weight XXS 9"-13.5" < 7 lbs. That's a HUGE difference. So I highly recommend using Thundershirt sizing to decide on which is best for your dog. ----------------------------------- Here is the complete chart: Size Chest Size Weight XXS 9"-13.5" < 7 lbs. XS 13"-18" 8-14 lbs. S 16"-23" 15-25 lbs. M 18"-26" 26-40 lbs. L 24"-32" 41-64 lbs. XL 31"-40" 65-110 lbs. XXL 38"-50" > 110 lbs. ----------------------------------- OK so regarding the efficiency of this shirt. I tested it outdoors with my dog on our front driveway just absorbing the sounds and sights of a normal neighborhood. My dog laid out in the sun and didn't seem reactive to much, whereas he normally would be. A neighbor walked their dog relatively near us, and my dog barked a little but he didn't run after the dog despite not being on a leash. Usually he won't leave my side but it can be unpredictable when it comes to dogs. The next day I took him out again and this time I forgot to put the shirt on. He was more on edge, and when a neighbor brought out their little dog, my dog went crazy and went running up to their dog barking. I grabbed him and took him straight inside. The next day, I tried it with the shirt again. This time children came running by, other dogs, etc. and he didn't move.. he actually just lay on his side and didn't react much. He might give a little bark here and there, but no where near his normal level of intensity. I tried his shirt during his advanced obedience training. He's in a class with all large dogs and the first day (without the shirt)he was shaking and just terrified. He would bark everytime the other dogs seemed to be a safe enough distance away, and wouldn't perform anything in front of the class since he was so scared. (sometimes I think my dog is bipolar). The second day of class (with the shirt) he was way more calm and less scared of the other dogs. We walked by 3 large dogs and he didn't make a peep. He performed in front of the class and was just more mellow overall, although he is still shakey and seems scared. I gave it 4 stars because I DO see improvement in my dog and it has only been about a week or so. However, I feel that although it takes the edge off him, I don't feel like the videos they post showing miraculous changes just by putting on the shirt are accurate. Perhaps there are dogs that this effect will happen, but I would consider it a rarity rather than the norm. I would have preferred more accurate marketing that really stresses the need to do behavioral modification in addition to the shirt. They do mention this, but its very brief compared to the marketing showing it as a miracle shirt. And after reading so many reviews, it seems I'm not alone in this shirt being part of a process rather than a fix. Overall, I recommend it and I'm going to try it with my friend's dog who is VERY hyper and see if it solves any issues with him. EDIT: The shirt worked miraculously on my friend's dog. The dog is high strung, paces, jumps up on people and overall just "starving" for attention. Won't let you pet any other dogs and has to be the center of attention constantly, which wears my friend out. We put the shirt on him and he just calmed down completely to normal dog levels. He lay down, relaxed.. yet, when the other dogs wanted to play, he still had energy to play. I played fetch with my dog in front of him and he just lay down and watched and didn't have the urge to go get the ball himself, which he normally would do. We took the shirt off him to see if maybe he was just in a mellow mood and he immediately got hyper and started pacing everywhere again. She's going to be buying one of these shirts because it made such a big difference in how he behaved.
N**A
10/10 Recommend!!
Great for anxious dogs. I have a 8 year old Chipoo (Prince) and a 2 year old Chiweenie (Leia) who are both very anxious in their own ways. Prince has bad separation anxiety and Leia is scared of loud noises like fireworks/thunder. They both seem to be more calm after I put on their vests. When we leave them alone I watch them through a doggie cam and Leia just sleeps and Prince lays down and watches out the window. Prince would howl and lick the window before and that has stopped now (with the vest). It also helped Leila tremendously with christmas/new years fireworks. I did also combine these vests with the Thunderease diffuser so I definitely recommend both products. Quality is good, Prince is 10.8 lbs and i got him the XS and Leia is 8.8lbs and she got the XXS. Both fit great. Prince also got the sport version so it’s different material and less stretchy than the original. The jump from XXS to XS is also a bit drastic as you can see in the photos, the sport version seems to be made for bigger breed puppies so I would say stick to the original for smaller breed dogs. I put them on pretty tight and they are still able to move/run like they normally would.
E**O
Didn't work for my pup
My dog occasionally gets anxiety and will start to tremble when she's upset. I haven't quite figured out the trigger, but it's clear she's distressed. I bought the ThunderShirt hoping to give her some relief. She wears winter jackets, so she had no problem when I tried to put this on her. She's a little over 60 lbs and the large fit her fine. There are two sets of velcro - one to close the shirt and one to tighten it for the snug feeling. I found it awkward to get both sets of velcro attached effectively while getting the shirt on straight and tight. Unfortunately, the ThunderShirt did absolutely nothing to calm my dog. She continued to be distressed and shake the whole time she wore it. We had to return it.
C**T
ThunderShirt Really Works
One of our dogs was a war rescue Malinois. She became a Master Class Therapy Dog with PAWSforPeople.org working in our Autism School, an AKC Therapy Dog Distinguished and my 3 task/medical alert Service Dog. However, from her past, every loud bang sent her into full panic mode. We trained her when she is afraid, safe spaces are a dark room with windows to a porch, a small room no windows and she could come to us. We got her a Thundershirt. We knew when fireworks were going to set off and with the ThunderShirt she was better handling the panic. Eventually she could sense a storm an hour before it arrived and come to us for her ThunderShirt. Then she'd go into the room with no windows, shut the door and wait it out. This July, we adopted a 1 yo puppy that is deaf and blind, and very little training. When he smells someone he doesn't know he bursts into a spinning weather vane. We got him a Thundershirt. He still gets excited but calms down quickly. We paid a little more for quality, fit, easy on and off, and ThunderShirts really work!
B**B
I inherited a dog that had never been left alone. I am out for a few hours every day. He howled and cried even though there were 2 other dogs with him. He was not in a crate. The thundershirt is working wonders for him. Cries very little if at all. He is just calmer. Under vet direction, I also give him 2mg of melatonin for his anxiety. These 2 things really helped him.
M**C
Thundershirt made a huge improvement to my dog's anxiety, specifically when fireworks are being set off. Combined with her safe space den, it has definitely helped her cope better during that horrible "Bonfire Night" fortnight. Sizing when ordering is a bit judgement based, its all about chest size. Fitting is a little tricky the first time until you figure it out, but is lovely and snug once closed up.
T**M
My dog is about 9 lbs. It fit her very well. It was easy to put on her and is well made.
A**L
My Jack Russell x would get very anxious (stressed and shaking) with thunder storms, when insects were in the house, and when having to go to the vet. Before trying anti-anxiety medication suggested by one of the vets, I thought I would try the thundershirt. It’s worked brilliantly. When she gets anxious, the shirt goes on and it calms her right down. She is no longer frightened going to the vets and, instead of becoming reactive (growling and trying to bite the vet), she is now happy to go to her appointments and the vet can give her her monthly injections without any reactive behaviour. In the vets words, they are now ‘BFF’s’! Thoroughly recommend. It may depend on the dog, but it’s worth a try before having to resort to medication.
M**A
Realmente acalmou e deixou minha american bully mais calma e menos ansiosa
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