The bag is closed using an adjustable strap/buckle. This allows you to compress the bag to save room when traveling light, or expand it when it's stuffed.
The material is flexible and lightweight, without a rigid frame. This allows you to pack it however you like, without wasting space in your pack/luggage.
If you hang this up in the shower, you don't have to worry about water being held in the pockets as all pockets are made of mesh. It also does a good job of containing moisture if you need to pack it before it dries, so it doesn't get your clothes wet.
At only 4.2 ounces, the organizer provides plenty of pockets for organizing your toiletries. The fabric is flexible, allowing you to fit it in tight places instead of the bag taking up unnecessary room.