The large ones can hold quite a bit of stuff, i find them great for holding wet stuff like my bikini and towels for when i go to the beach.
small ones are good for organizing little things during travels, large ones you can roll your clothes and pack them in
I recommend these bags for holding cosmetics, or small things that could be hanging loose in your luggage. I only took them on a single two-week trip so far but they still look great and the zipper part seems to be holding up well. If they ever break I'll update by review, but at the moment I think they're wonderful.
Great packing pouches for simple and convenient travel, excellent quality and reasonable price. I purchased these packing cubes for an international trip where I was only bringing a carry-on bag. All the packing advice blogs seemed to swear by packing cubes so I decided to just go for it and give them a try. I don't think I'm ever going to take a trip again without them. There were several times when I had to open my bag for security or to get something out and it was so easy to just grab the pouch I needed rather then fuss through my entire bag.
I pack carry-on only and use packing cubes. Believe it or not, the weight can add up. I wanted something lighter and these delivered. They are very lightweight so if you are somebody who stuffs your cubes completely full, you might risk straining the pouches. If you don't go overboard, these should be fine.
I didn't think the material from which the packages are made would be so dense and of high quality. Better than expected, not sure about how water proof it is though.