- ThunderShirt is the #1 vet recommended calming wrap and already used by millions of dogs to help calm anxious behaviors! - Our patented, easy-to-use calming wrap for dogs is a drug-free option which applies gentle calming pressure around your dog’s torso, similar to swaddling an infant - Use ThunderShirt whenever your dog experiences anxiety in situations such as thunderstorms, fireworks, vet visits, separation, loud noises, traveling, and having visitors - Over 85 Percentage of pet parents surveyed reported improvement in their pet’s signs of stress when using ThunderShirt - ThunderShirt is light-weight, breathable, and machine washable, fit for all climates and lifestyles. It is easy to use; simply fasten the straps around your dog’s neck and torso to apply gentle calming pressure: No training required Size: Large Neck size: 25 inches Chest size: 30 inches Minimum weight: 40 lbs Color: Charcoal gray NWOT Smoke free home Retail: $50