Consider your needs. Some garment bags are made specially for suits, while others will hold a variety of garments, including folded shirts, underwear, sweaters and shoes.
Look for a bag with inside pockets for storing toiletries or other items.
Buy a garment bag that meets carry-on standards so that it can be taken on an airplane and stowed under the seat or in an overhead bin.
Choose a garment bag with a bifold or trifold design so that it can be folded into a manageable size for carrying. It should also have a sturdy handle for carrying in this position, or an attachable shoulder strap.
Get a bag that has wheels, or can ride "piggyback" on the handle of a larger wheeled suitcase.
Be sure the bag is made of strong, puncture-resistant material.
Make sure the bag has locks so it won't open when held upside-down, and sturdy zippers or clasps to close it all the way around.
Look for special features that help garments inside the bag resist wrinkles or bunching up.
Check the warranty. Fine (and expensive) garment bags should have a lifetime warranty.
