The vet recommended ThunderShirt has already helped millions of dogs and can be effective in calming during fireworks, thunderstorms, travel, vet visits, separation anxiety and more! Like swaddling an infant, ThunderShirt’s patented design applies gentle, constant pressure to calm all types of anxiety, fear, and over-excitement issues. ThunderShirt is the original, vet recommended, natural calming solution that helps reduce anxiety in dogs in a drug-free way. Like swaddling an infant, our 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 helps reduce anxiety relating to fireworks, thunderstorms, separation anxiety, travel, vet visits, problem barking and more. Treat anxiety, fear, and over-excitement in style! You’ll love the ThunderShirt’s calming effect on your dog.