Not just the fact that cubes are the best way to pack your bags for traveling, these cubes have worked well. I purchased these two years ago and have used them on several long trips.  They help keep my clothes and items organized.  Now, I wish the zippers were stronger though and the mesh can tear.  However, I've used these a lot and I'm not the most graceful lady in the kingdom.  Part of the issues could be user caused - over stuffing, snagging on my suitcase or other items.  I still recommend them.

Pros: color/design, usability, number of bags (great deal)
Cons: zippers