With its patent-pending design, Thundershirt's gentle, constant pressure has a dramatic calming effect for most dogs if anxious, fearful or over excited. Based on surveys completed by more than two thousand consumers, over 80% of dogs show significant improvement in symptoms when using Thundershirt. Thundershirt is already helping tens of thousands of dogs around the world, and is recommended by thousands of veterinary professionals and dog trainers. Thundershirt can used for the following symptoms- Fear of thunder Fear of fireworks Seperation anxiety Crate training Problem barking Problem Jumping Lead pulling and many more! Thundershirt offer a 100% satisfaction guarantee!