Good for organization
This cube is pretty small, but I bought a couple to fit inside my carry on luggage. It would be great for underwear, socks, or toiletries. Material is very durable too.

Perfect size
For whatever reason, I purchased and packed just about everything else I needed before considering the necessary toiletry bag. Luckily Eagle Creek provides a very large assortment of these types of bags in many shapes and sizes. Since I had just a sliver of long space left available in my bag, most cubes or other large toiletry bags would not fit. Fortunately I came across this "tube" that fit everything in my kit while also fitting snuggly in the small space I had available for it. The bag has no extra ordinary features, but it was the perfect size for what I needed. With all of Eagle Creeks various bags, they likely have some of the right size for just about everyone.