I've got an upcoming trip to Europe where I plan to do carry-on only and researched extensively into the best ways to optimize space in my bags. These compression cubes do not disappoint! They were able to fit a surprising amount of clothes inside and compressed down beautifully. All of the material used for making the cubes, from the fabric to the zippers, are high quality. I had no issues using the compression zipper to squish everything down. Packed beautifully into my carry-on luggage and would also fit amazingly in my Terra backpack. Really love these cubes and I high recommend them. Price tag might be higher but I've heard from so many people that cheaper alternatives have flimsy zippers that struggle to compress the clothing down. Not these! They're great—and they come in SUCH cute colors! And yes, if given the option, I will always opt for something cute to look at if I'm going to spend the money!