- Patriotic bow ties for medium and large dogs and pigs. Flag patterns are great gifts for everyday use, 2. The material is polyester. Pets are healthy, smooth and safe. You don’t need to worry about the quality. 3. There are two rubber bands on the back of the bow tie. You can easily slip them over/under most collars. They make the best pet collar accessories. Just a bow tie, no collar. 4. They aren’t just for pet collars. You can wear it on headbands, necklaces.