The Thundershirt is an effective and safe solution for calming fearful and anxious dogs that are having to deal with stressful situations which include (but aren't limited to) thunderstorms, traveling in the car, upcoming changes in the household or firework displays which we are seeing increasingly all year round and not just around bonfire night, Christmas and New Year. Thundershirt is easy to put on, comes in a variety of sizes and ensures a consistent pressure on the core of the dog. It is the original, veterinary 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.