I have had these for only a week, so I cant attest to their long-term durability, but as a mom with two young kids I already love these cubes. Since my kids are small and cant be relied on to carry their own bags yet, I like to pack all of our clothes into one large suitcase for trips. Until now, though, I always found myself pulling everything out of the suitcase at our hotel in order to find one tiny pair of socks, creating a huge mess. (Trust me, my kids can make big enough messes on their own without me adding to them). I purchased the multicolor pack and assigned everyone their own color of cube. I fit all the clothes for a two day trip for myself and the kids into three cubes - they each had a small cube and I had a medium cube. There was room to spare in all the cubes, and I had extra room in my carryon suitcase for our spare shoes, including my chunky heels. The open mesh design of the cubes means that you can see most of whats in each one without disturbing the contents. I was sold on the first night of our trip - after putting the kids to bed, I had to get my pjs out. I lifted each of the small kid cubes out of the suitcase, opened my cube, lifted out the pjs without disturbing the rest of the clothes, zipped my cube back up, and set the kids cubes back on top. Everything was still in its place... and if you have kids, you know how great it feels when everything is still in its place. Aaahh... bliss.