These are such good quality packing cubes! The material and construction of the cubes is superior to the other set of packing cubes that I have (that was almost twice the price, mind you). The material is 100% waterproof and the zippers open all the way around the cube for easy packing.I like how these bags have mesh on top so that you can visualize what is in the bag without having to open it. The mesh is a thicker fabric that looks and feels durable - It's not the cheap, flimsy laundry bag type of mesh that one would expect - it's rigid like plastic but still foldable or bendable.The variety and sizes of the cubes were designed meaningfully, You'll notice that T-shirts fit perfect into one of them, sweaters in the other etc. They all fit inside the biggest cube for easy storage.If you look at the listing pics, you'll notice a "rainbow pattern" on the tops of the 3 larger bags - I thought it was part of the design, but note this is NOT the color of the actual bag, it's the contents of the bag that you see (through the mesh) - the manufacturers obviously packed a rainbow striped item in each bag for picture day.This is my second set of packing cubes (the first set is from a different manufacturer) and honestly, I don't know how I ever travelled without them. Once you have these you will know what I mean.Each cube can hold something different and it allows for prepacking things before you are ready to haul out the suitcase. I had my t-shirts, shorts, swimsuit (all the summer stuff that I don't need now), packed and stacked, ready to toss in the suitcase. It makes packing so much less daunting, faster and less stressful because you can pack one or two items on your packing list every day before the big travel day without having clothes lying all over. It looks nice an organized, and saves a lot of space.