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🐾 Wrap your dog in calm — because peace of mind is the ultimate style statement!
ThunderShirt Sport Large is a vet-recommended, patented calming vest designed to reduce anxiety in dogs through gentle, swaddling pressure. Made from lightweight, breathable, and machine-washable fabric, it offers an adjustable, comfortable fit suitable for all climates and active lifestyles. Proven effective for over 85% of users, it’s ideal for thunderstorms, fireworks, travel, and separation anxiety, combining science-backed design with sporty reflective accents for safety and style.





| ASIN | B01FN4GW2M |
| ASIN | B01FN4GW2M |
| Additional Features | Lightweight |
| Age Range Description | All Life Stages |
| Animal Theme | Dog |
| Best Sellers Rank | #10,674 in Pet Supplies ( See Top 100 in Pet Supplies ) #13 in Dog Lifejackets |
| Brand Name | Thundershirt |
| Breed Recommendation | All Breed Sizes |
| Chest Size | 30 Inches |
| Closure Type | Sport |
| Color | Platinum |
| Customer Reviews | 4.3 4.3 out of 5 stars (19,241) |
| Date First Available | May 13, 2016 |
| Department | dogs |
| Dog Breed Size | All |
| Fabric Type | 100% Polyester |
| Global Trade Identification Number | 00819505013237 |
| Is Discontinued By Manufacturer | No |
| Item Type Name | ThunderShirt for Dogs, Sport |
| Item Weight | 0.5 Pounds |
| Item model number | SPTGL-T01 |
| League Name | NBA |
| Manufacturer | ThunderShirt |
| Manufacturer | ThunderShirt |
| Manufacturer Part Number | SPTGL-T01 |
| Material Type | Cotton |
| Minimum Weight Recommendation | 41 Pounds |
| Model Number | SPTGL-T01 |
| Neck Size | 11.5 inches |
| Neck Style | Round Neck |
| Number of Items | 1 |
| Occasion | Holiday |
| Package Dimensions | 9.88 x 6.69 x 2.2 inches; 8 ounces |
| Pattern | Solid |
| Pet Type | Dog |
| Product Care Instructions | Machine Wash |
| Seasons | All |
| Size | Large |
| Style | Sport |
| Target Species | Dog |
| Theme | Sports |
| UPC | 819505013237 |
| Unit Count | 1 Count |
| Water Resistance Level | Not Water Resistant |
M**S
Noticeably helps calm anxious dogs during storms and stressful situations
The ThunderShirt calming vest works surprisingly well for helping dogs relax during stressful events like thunderstorms, fireworks, or travel. The snug, gentle pressure from the wrap-around design seems to have a soothing effect, similar to how weighted blankets work for people. After putting it on, my dog became noticeably calmer and less reactive to loud noises and sudden sounds. The material feels durable but soft, and the adjustable straps make it easy to get a secure fit without making it too tight. Once adjusted properly, it stays in place and allows the dog to move comfortably without restricting normal activity. The bright fuchsia color is also easy to spot and looks great. A helpful tip is to introduce the ThunderShirt during a calm moment first so your dog becomes familiar with wearing it before a stressful event. It also helps to adjust the straps so the vest fits snugly but still allows comfortable breathing and movement. Overall, this calming vest is a simple and effective tool for helping reduce anxiety in dogs during loud or stressful situations.
N**A
100 % WORTH IT!
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.
C**Y
Fits size 7 pound dog and help with anxiety
I have a miniature pincher who is 7 pounds and terrified of rain, thunder, and lightning. She also has separation anxiety. I purchased this in an xx small and it fits good. While I was out, it started to rain and thunder and lightning today. Immediately came home and put it on her as she was panting and jumping in my lap and jump out, pant and shaking! I put it on her as tight as I could get it. She still seems nervous, but the panting stopped and she is not shaking as bad. So overall, it’s a great buy and does work.
M**S
Helps My Anxious Pit Bulls - Realistic Expectations, Real Results
I purchased these X-Large ThunderShirts for my two pit bull girls. One is terrified of storms and fireworks, while the other protects her from all the noises. These vests genuinely help. Realistic Expectations: I don’t expect these to completely fix the anxiety issue - that’s not realistic. But if you’re looking for something that helps reduce anxiety and provides comfort, these are useful tools. Our Routine: These come out before every storm or fireworks holiday. It’s become part of our calming protocol, and the dogs have learned to associate them with comfort. Ease of Use: Pretty easy to put on, and my girls don’t mind wearing them - especially if a treat is involved in the process! The platinum sport version fits my large pit bulls well. Results: They sleep more soundly and seem more comfortable when wearing the ThunderShirts during stressful events. That’s a win in my book. Pros: ∙ Does help reduce anxiety ∙ X-Large fits large breeds like pit bulls ∙ Easy to put on ∙ Dogs comfortable wearing them ∙ Works for storms and fireworks ∙ Part of effective calming routine ∙ Dogs sleep more soundly with them on ∙ Realistic aid, not miracle cure Bottom Line: Recommended for anxious dogs, but keep expectations realistic. These won’t eliminate all anxiety, but they do help provide comfort and reduce stress during storms and fireworks. For my terrified pit bull girls, that makes them worthwhile. A useful tool in managing canine anxiety.
N**.
We have a huge working dog on our property that experiences some distress surrounding fireworks, thunder, and.. gunshots! Since it's an off-grid camping sight out in the sticks, people shoot and hunt out there recreationally and he finds it stressful. This isn't just helping him deal with the fear in the moment, something I've noticed is it's helping train him to be calm over time. I can foresee a day where he doesn't need it anymore (but we have already got our money's worth, after a couple weeks with consistent daily thunderstorm/cloudbursts)!
M**I
Ottimo prodotto. Ho risolto il problema di lasciare la mia cagnolina sola in casa. Prima di acquistare questo prodotto non potevo nemmeno lasciarla per il tempo di fare la spesa. Al ritorno aveva grattato disperata i muri di casa. Ora la lascio con il cappottino sul divano e la trovo nello stesso posto quando faccio ritorno
W**R
Sorry for the one star, the product was shipped promptly, well packaged and delivered on time. The quality of the product is very good, well-made and looks as if it will be very durable. However, I won't be able to confirm that last point as it won't be used. We tried it for a couple weeks with no effect on the dog, still gets very anxious and stressed during thunderstorms (I live in Singapore, so they are quite frequent).
A**E
X
R**A
Absolutely loved the quality and the finish was high quality. Was happy with the price for the quality of the Thundershirt. Went and tried a x small at 4 different pet barns and shops. The quality of the material was so bad and the stitching wasn't going to last. There was no way I was purchasing the Thundershirt locally. So unpicked and made smaller was a slow processes as everything had to be placed in the right position Fits perfect. He likes wearing it. Trust me I can tell. So definitely would buy the same product again.
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