Dog vest harnesses are a comfortable accessory to start using a harness with your dog. They are very easy to put on and get your dog ready for a walk in just a few seconds. Vest harnesses are usually for small dogs, but brands like Martin Sellier offer sizing that includes both toy and medium-sized dogs. These dog vest harnesses are padded, easy to clean, and resistant to daily use. Some come in vibrant colors and fun patterns like those from the brand Milk & Pepper.