I love my packing cubes from ebags! I don't think I could travel without them now, even on short trips! I have 2 sets of my own and have bought sets for 2 other people now and they love them. I first bought the small/med/large set then a set of 3 more small ones for everyone. Now I will say that I am Pooh sized, so therefore MY clothes don't fit in them but socks and undies fit great. I use one or two for toiletries, another for important nail products. One or 2 stay packed all the time with little things we have found essential for a trip or a cruise - scissors, tape, towel clips(deck chairs), clothes pins, sharpie markers, night light (hotel use) etc , I just grab a bag when I need it and toss it in the suitcase. There are so many uses when I travel I can't even list them all. They weigh nothing (maybe an ounce or two) at the most, they control clutter in the suitcases or carryon bags unlike anything else I have ever used. My only issue now is that I have lots of boring navy and aqua (not sure of the real name) and now I want some of the GREAT new colors and patterns. But since I have so many already and they are in great shape after many trips in the past 4 years...........I won't let myself buy any more!
PS. I have washed them with towels in the washer and they come out great, don't even need to be dried since they are so lightweight, they dry fast without any trouble. I learned this from a few spills (shampoo and powder)!