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ThunderShirt® Sport Platinum

$44.95 USD   was Regular price $49.95 USD In Stock & Ready to Ship!


ThunderShirt Sport's patented design applies a gentle, constant pressure that has a dramatic calming effect for most dogs.

A Calming Hug

The Better Calming Solution

The ThunderShirt Sport effectively treats anxiety, fear, and over-excitement in style. Designed for comfort, the breathable jacket features washable, durable fabric with contrasting trim and reflective logos for safer nighttime walks. ThunderShirt has the best patented pressure-wrap design available. Great for thunderstorms, fireworks, separation anxiety, travel, vet visits, problem barking, reactivity, and other stressful situations.


A puppy and a kitten relaxing while wearing their ThunderShirts.


Completely Drug-Free

This type of solution works in a similar manner to swaddling an infant.

No Training Required

In most cases, you'll see results immediately.

Additional Features

Veterinarian Recommended

Thousands of veterinarians recommend ThunderShirts around the world.

Over 80% Success Rate

From real-world experience helping millions of dogs and cats, we know that ThunderShirts help for over 80% of cases.

Check out this blog post to see how a ThunderShirt and some wonderful people helped Olivia, a shelter dog, overcome her crippling anxiety!

How It Works

ThunderShirt uses gentle hugging to calm your dog. With its patented design, ThunderShirt's gentle, constant pressure has a dramatic calming effect for most dogs if they are anxious, fearful, or overexcited.

Experts believe that pressure has a calming effect on the nervous system, possibly by releasing a calming hormone like endorphins. Using pressure to relieve anxiety in people and animals has been a common practice for years.

View the sizing table here.

60-Day Money-Back Guarantee

Risk free. Your problem will be solved within 60 days or we'll happily refund the product price.

Video: See the Difference

Here's a compilation of “before and after” videos including thunder storms, barking, spinning, jumping, stranger reactivity, and travel.

Details and Specs

Extra, Extra Small<=3.5 kg dog
Extra Small3.6 kg –6.35 kg dog
Small6.36 kg–11.3 kg dog
Medium11.4 kg–18.1 kg dog
Large18.2 kg–29 kg dog
Extra Large29.1 kg–50 kg dog
Extra, Extra Large>=50 kg dog
After Purchase
ManualPDF [1.02 MB]  
Warranty1-Year manufacturer's warranty
60-Day Money-Back Guarantee


  • Why does ThunderShirt work?

    From real world experience helping millions of dogs, we know that ThunderShirts help for over 80% of cases. That is why we can offer a money-back guarantee. ThunderShirt's patented design applies a gentle, constant pressure on a dog's torso.

    Using pressure to relieve anxiety has been a common practice for years. Prior to ThunderShirt, there just wasn't an easy and safe way to do so for our dogs. It is believed by many experts that this type of pressure works in a similar manner to swaddling an infant, or people with autism using pressure to reduce persistent anxiety.

  • Why doesn't my vet know about this remedy for anxiety and fear issues?

    Good question! With tens of millions of dogs suffering from anxiety, we are striving to build awareness of this simple, safe, and inexpensive solution. The ThunderWorks crew attend many veterinarian education events and other vet forums every year. ThunderShirts were ranked the most effective solution for anxiety by veterinarians in a 2011 survey. Thousands of veterinarians recommend ThunderShirts around the world.

  • What training is required for using ThunderShirt for anxiety and fear issues?

    For many types of anxiety or fear issues, no training is necessary! Just put ThunderShirt onto your dog and you will likely see results with the very first usage. However, for some, it may take two to three usages to see maximum results. For some more serious anxiety cases, such as severe separation anxiety, you should consult a good trainer for how to integrate ThunderShirt into a training program.

  • Can I wash and dry ThunderShirt? Remove hair from fastener hooks?

    Yes! ThunderShirt is made with durable, washable fabric. When necessary, ThunderShirt may be washed in a regular cycle using regular laundry detergent and cold water. Hang to dry.

    If necessary, to remove hair from your ThunderShirt's fastener hooks, we recommend using a standard dog “slicker” brush (available at most any pet store for as little as $2.99 USD). A couple of strokes and the fastener hooks will be nearly completely hair-free.

  • Are there any special sizing and fit considerations for male dogs?

    When fitting a ThunderShirt on a male dog, the straps that go around the stomach area should not cover or push on the genitals or prepuce. If the ThunderShirt rubs against the genitals or prepuce, irritation may result. If you see any indications of this, remove the ThunderShirt immediately. Try a smaller size or contact us for other suggestions.

  • Is overheating a concern when using a ThunderShirt?

    Except in extreme conditions (e.g. 90° F or 32.2° C in the sun), overheating is not typically a concern when using a ThunderShirt. Dogs cool themselves primarily through their mouths and paws, and a ThunderShirt is constructed of a thin, breathable fabric. In fact, the state of Florida is one of our biggest markets.

    If you feel that overheating might be a problem for your particular circumstance, please monitor your dog for any signs of overheating such as heavy panting or tongue hanging out of the mouth. Remove the ThunderShirt if you see any signs of overheating.

  • What if I see signs of discomfort or irritation with my dog or cat when wearing a ThunderShirt?

    Most dogs love to wear ThunderShirts! We hear feedback from families all the time that their dog literally seeks out their ThunderShirt in times of stress. When sized and put on properly, your dog should be very comfortable wearing a it. Problems are very rare, but if you see any signs of skin irritation or physical discomfort, please discontinue use and contact us.

  • How long can I leave a ThunderShirt on my dog?

    ThunderShirt is designed to be safe to leave on for extended periods of time when appropriate for the situation or issue. When properly sized and properly put on with a comfortably snug fit, your dog should be very comfortable. If your dog will be wearing a ThunderShirt for more than one hour at a time, we recommend removing ThunderShirt every one to two hours during the initial periods to check for any signs of irritation points. Irritation points are very rare, but it is best to be cautious.