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. Based on surveys completed by over two thousand customers, over 80% of dogs show significant improvement in symptoms when using Thundershirt. Thundershirt is already helping hundreds of thousands of dogs around the world and is recommended by thousands of veterinarians and trainers. Thundershirt helps keep animals calm so they are more comfortable in situations that were once frightening. Patented design applies gentle, constant pressure to calm anxiety, fear, and over-excitement. This gentle hugging produces a dramatic calming effect. Calms your dog during fireworks, thunder, separation, travel, vet visits, grooming, and much more with no training and no medication. Comfortable and easy on/off. Made of durable, breathable, soft fabric that is washable. Recommended by trainers and veterinarians to relieve stress-related behaviors such as jumping, excessive barking, and inappropriate marking. Proven effective in over 80% of dogs.