I don't travel much so only used these twice but they helped keep me organized.  The last time I was able to use a shoulder bag instead of a roll on because they keep the clothes compressed.  They didn't slip around when on their side. Worth it if you are a neat freak. They worked best when packed tight.  One of these sets worked fine for a 4 day trip. large for pants and dress shirts, medium for casual shirts and or shorts, small for undies and socks.  Quality looks good but the material is fairly thin with mesh.