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ThunderShirt is the original, vet recommended, natural calming solution that helps reduce anxiety in dogs in a drug-free way. Its patented design applies gentle, constant pressure to calm all types of anxiety, fear, and over-excitement issues in dogs.
ThunderShirt is the original, vet recommended, natural calming solution that helps reduce anxiety in dogs in a drug-free way. Like swaddling an infant, this dog anxiety vest's patented design applies gentle, constant pressure to calm all types of anxiety, fear, and over-excitement issues in dogs.
The ThunderShirt is proven to be over 80% effective in reducing anxiety for fireworks, thunderstorms, separation anxiety, travel, vet visits, problem barking and more.
Size Guide:
| ThunderShirt Size | Dog Weight | Chest Measurement |
| XXS | Less than 8 lbs | 9" - 13" |
| XS | 8 - 14 lbs | 13" - 17" |
| S | 15 - 25 lbs | 17" - 21" |
| M | 26 - 40 lbs | 21" - 25" |
| L | 41 - 64 lbs | 25" - 30" |
| XL | 65 - 109 lbs | 30" - 37" |
| XXL | Over 110 lbs | 37" - 50" |