These hold much more than I expected, and helped keep things organized for a trip to the beach. I packed clothes for all four of us (the kids were 10 months and 2 years, plus clothes for my husband and me) in one suitcase, and each person got a cube for their clothes. Everything I needed for a week went in one cube, my husband's clothes in another cube, my daughter in a third. My son's tiny clothes fit in a medium cube, and my daughter's probably could have, too, but I only had one. Next time, though, I think I'll pack entire outfits together and use the cubes to separate by day (everyone's clothes for one day in one cube).