I really labored over which packing cubes to buy, but picked these one as they are made of a fairly light material, came in a range of colors and had good reviews. I also like the fact they have mesh panels that are breathable and you can see through them to see what's in each cube. They also open up completely (due to the double zipper feature) and almost act like mini individual suitcases.

I am usually the type that starts off with a nicely packed suitcase, but when I get to each hotel (if on a touring vacation), I make such a mess of my suitcase, pulling everything out trying to find that one specific thing, that I thought packing cubes would be the answer. I was also sold on the concept when I went to a local travel show and saw a seminar about using them. So far, I have used these on a long-weekend trip and they worked out great -- no more messy suitcase jumble! I almost find the large one a little too large, but it worked for larger items like jeans or light sweaters. Another thing I like about this brand is that I can add to the collection with different sizes and colors if need be. I got the grey color as it is understated, yet differentiates from the black interior of my suitcase.