The ThunderShirt XS comfort shirt is designed specifically for small dogs, providing them with a cozy and secure fit in a stylish gray color. This high-quality product, made in Vietnam, is perfect for pet owners looking to help their furry friends feel calm and comfortable during training or other obedience tasks. With one ThunderShirt unit available, you can trust that your small breed dog will be well-equipped to stay relaxed and focused during their training sessions. Has been used by my previous dog before he passed.