Thundershirt has become so famous for a reason: It helps frightened dogs! Thundershirt is a new and revolutionary, yet completely easy and natural way to help dogs enjoy living in a state of calm. Thundershirt uses pressure wrap, the same type of concept used successfully to help relax babies, autistic children and animals, to help relax and comfort your dog. Thundershirt reports that over 80% of dogs who use the pressure wrap vest experience significant improvement. In most cases it eliminates the need for supplementation or training. Can be effective in treating fear or anxiety associated with thunderstorms, fireworks, car trips, travel, separation anxiety. Even helpful when receiving guests. Cost effective because it may resolve fear and anxiety without need for additional supplementation. Available in 7 sizes; vests custom fit with velcro.