I first saw these types of packing cubes being used in one of the youtube videos that I was watching. Good thing Amazon has a nice selection. The material is really good, thin but tough. According to my wife, it’s better compared to the one sold in Kmart. The cubes have double sided zipper opening which we use to separate clothes according to use like clothes for going out during the day and on the other side, sleeping clothes. This is a really nice to organise our luggage for short out of town trips.