I was quite skeptical when I purchased these cubes. I had never used cubes before but thought I would try them for a 11 day river cruise. I was able to pack all of my clothes into these cubes in 1 suitcase. I couldn't believe it myself but if you watch some of the Rick Steves videos on YouTube, they show you how to properly roll and store your clothes while traveling without wrinkling your items. It was so nice to put the cubes into the dresser and see exactly what clothing piece you were looking for. The zippers on these worked really well as they are able to zip both ways. I highly recommend these to anyone that travels.