A garment bag provides a way of transporting clothes with limited wrinkles and exposure to dust or months, making it ideal for your more expensive clothing items. You want to preserve garments like gowns and suits as long as possible, and storing your finer pieces in garment bags helps increase their longevity. Garment bags, like carry-on garment bags, are also great for travel and helping to ensure that your clothing arrives at your destination looking its best.